CHAPTER II

HSÜAN TÊ [chch 2] (1426–1435)

In this short reign, which Chinese writers regard as the most brilliant

period of their porcelain industry, the number of kilns occupied with

the Imperial orders had increased to fifty-eight, the majority of them

being outside the Imperial factory and distributed among the private

factories. According to the _T’ao lu_,[16] the clay used at this

time was red and the ware like cinnabar, a statement which is difficult

to reconcile with the glowing description of the jade-like white altar

cups and other exquisite objects for which the reign was celebrated.

It is, of course, possible that a dark coloured body was employed in

some of the wares, as was done at other periods, or it may be that the

words are hyperbolically used to describe a porcelain of which the

exposed parts of the body assumed a red colour in the firing. This

latter peculiarity is noticeable on specimens of later Ming porcelain,

particularly the blue and white of the Chia Ching period. But in any

case a red biscuit cannot have been invariable or even characteristic

of the period, for no mention is made of such a feature in the _Po

wu yao lan_, which gives by far the fullest account of the Hsüan Tê

porcelain.

The description in the _Po wu yao lan_,[17] which seems to

have been generally accepted, and certainly was largely borrowed by

subsequent Chinese works, may be freely rendered as follows:

“Among the wares of the Hsüan Tê period there are stem-cups[18]

decorated with red fish. For these they used a powder made of red

precious stones from the West to paint the fish forms, and from the

body there rose up in relief in the firing the precious brilliance of

the fresh red ravishing the eye. The brown and blackish colours which

resulted from imperfect firing of the red are inferior. There were

also blue decorated wares, such as stem-cups with dragon pine and plum

designs, wine stem-cups with figure subjects[19] and lotus designs,

small cinnabar pots and large bowls in colour red like the sun, but

with white mouth rim, pickle pots and small pots with basket covers and

handles in the form of bamboo joints, all of which things were unknown

in ancient times. Again, there were beautiful objects of a useful kind,

all small and cleverly made with finely and accurately drawn designs.

The incense vases, trays and dishes[20] were made in large numbers, and

belong to a common class. The flat-sided jars with basket covers, and

the ornamented round pots with flanged[21] mouth for preserving honey,

are very beautiful and mostly decorated in colours (_wu ts’ai_). The

white cups, which have the character _t’an_ (altar) engraved inside the

bowl, are what are known as 'altar cups.’ The material of these things

is refined and the ware thick, and the form beautiful enough to be used

as elegant vases in the true scholar’s room. There are besides white

cups for tea with rounded body,[22] convex[23] base, thread-like foot,

bright and lustrous like jade, and with very finely engraved[24] dragon

and phœnix designs which are scarcely inferior to the altar cups. At

the bottom the characters _ta ming hsüan tê nien chih_[25] are secretly

engraved in the paste, and the texture of the glaze is uneven, like

orange peel.[26] How can even Ting porcelain compare with these? Truly

they are the most excellent porcelains of this reign, and unfortunately

there have not been many to be seen since then. Again, there are the

beautiful barrel-shaped seats, some with openwork ground, the designs

filled in with colours (_wu ts’ai_), gorgeous as cloud brocades, others

with solid ground filled in with colours in engraved floral designs, so

beautiful and brilliant as to dazzle the eye; both sorts have a deep

green (_ch’ing_) background. Others have blue (_lan_) ground,

filled in with designs in colours (_wu ts’ai_), like ornament carved

in cobalt blue (_shih ch’ing_, lit. stone blue). There is also blue

decoration on a white ground and crackled grounds like ice. The form

and ornament of these various types do not seem to have been known

before this period.”

[Illustration: Plate 60.--Reputed Hsüan Tê Porcelain.

Fig. 1.--Flask with blue decoration, reputed to be Hsüan Tê

period. Height 3¼ inches. _British Museum_.

Fig. 2.--Brush Rest. (?) Chang Ch’ien on a log raft; partly

biscuit. Inscribed with a stanza of verse and the Hsüan Tê mark.

Length 6 inches.

_Grandidier Collection._]

[Illustration: Plate 61.--Porcelain with _san ts’ai_ glazes

on the biscuit.

Fig. 1.--Wine Jar with pierced casing, the Taoist Immortals

paying court to the God of Longevity, turquoise blue ground.

Fifteenth century. Height 11½ inches. _Eumorfopoulos

Collection._

Fig. 2.--Screen with design in relief, horsemen on a mountain

path, dark blue ground. About 1500. Height 14 inches. _Benson

Collection._]

It will be seen from the above that the Hsüan Tê porcelains included

a fine white, blue and white and polychrome painted wares, underglaze

red painted wares, and crackle. The last mentioned is further specified

in the _Ch’ing pi tsang_ as having “eel’s blood lines,”[27] and

almost rivalling the Kuan and Ju wares. The ware was thick and strong,

and the glaze had the peculiar undulating appearance (variously

compared to chicken skin, orange peel, millet grains, or a wind ruffled

surface) which was deliberately produced on the eighteenth century

porcelains.

Another surface peculiarity shared by the Hsüan Tê and Yung Lo wares

was “palm eye” (_tsung yen_) markings, which Bushell explains as

holes in the glaze due to air bubbles. It is hard to see how these can

have been other than a defect. Probably both these and the orange peel

effects were purely fortuitous at this time.

Of the various types which we have enumerated, the white wares need

little comment. The glaze was no doubt thick and lustrous like mutton

fat jade, and though Hsiang in his Album usually describes the white of

his examples as “white like driven snow,” it is worthy of note that in

good imitations of the ware particular care seems to have been given to

impart a distinct greenish tint to the glaze.

The honours of the period appear to have been shared by the “blue and

white” and red painted wares. Out of twenty examples illustrated in

Hsiang’s Album, no fewer than twelve are decorated chiefly in red,

either covering the whole or a large part of the surface or painted

in designs, among which three fishes occur with monotonous frequency.

The red in every case is called _chi hung_, and it is usually

qualified by the illuminating comparison with “ape’s blood,” and in one

case it is even redder than that!

The expression _chi hung_ has evidently been handed down by oral

traditions, for there is no sort of agreement among Chinese writers

on the form of the first character. The _T’ao lu_ uses the character

[chch], which means “sacrificial,” and Bushell[28] explains this “as

the colour of the sacrificial cups which were employed by the Emperor

in the worship of the Sun.” Hsiang uses the character [chch] which

means “massed, accumulated.” And others use the character [chch] which

means “sky clearing,” and is also applied to blue in the sense of the

“blue of the sky after rain.” In the oft quoted list of the Yung Chêng

porcelains we find the item, “Imitations of Hsüan _chi hung_ wares,

including two kinds, _hsien hung_ (fresh red) and _pao shih hung_

(ruby red).” There can be little doubt that both these were shades of

underglaze red derived from copper oxide, a colour with which we are

quite familiar from the eighteenth century and later examples.

For in another context we find the _hsien hung_ contrasted with

_fan hung_, which is the usual term for overglaze iron red,

and the description already given of the application of _pao shih

hung_ leaves no doubt whatever that it was an underglaze colour. The

two terms are probably fanciful names for two variations of the same

colour, or perhaps for two different applications of it, for we know

that it was used as a pigment for brushwork as well as in the form of a

ground colour incorporated in the glaze. The secret of the colour seems

to have been well kept, and the general impression prevailing outside

the factories was that its tint and brilliancy were due to powdered

rubies, the red precious stone from the West which gave the name to the

_pao shih hung_.[29] It is known that in some cases such stones

as cornelian (_ma nao_) have been incorporated in the porcelain

glazes in China to increase the limpidity of the glaze. This is reputed

to have happened in the case of the Ju yao, but neither cornelian nor

ruby could serve in any way as a colouring agent, as their colour would

be dissipated in the heat of the furnace. The real colouring agent of

the _chi hung_ is protoxide of copper. If there were nothing else

to prove this, it would be clear from the fact hinted in the _Po wu

yao lan_ that the failures came out a brownish or blackish tint.

This colour has always proved a difficult one to manage, and in the

early part of the last dynasty, when it was freely used after the

manner of the Hsüan Tê potters, the results were most unequal, varying

from a fine blood red to maroon and brown, and even to a blackish tint.

The peculiar merits of the Hsüan Tê red were probably due in some

measure to the clay of which the ware was composed, and which contained

some natural ingredient favourable to the development of the red. At

any rate, we are told[30] that in the Chia Ching period (1522–1566)

“the earth used for the _hsien hung_ ran short.”

Among the favourite designs[31] expressed in the Hsüan Tê red were

three fishes, three fruits,[32] three funguses, and the character

_fu_ (happiness) repeated five times.[33] All these are mentioned

among the Yung Chêng imitations. A good idea of the fish design is

given by a cylindrical vase in the Franks Collection, which is plain

except for two fishes in underglaze red of good colour, and rising in

slight relief in the glaze. The glaze itself is of that faint celadon

green which was apparently regarded as a necessary feature of the

Hsüan Tê copies, and which incidentally seems to be favourable to the

development of the copper red. The _sang de bœuf_ red of the last

dynasty is avowedly a revival of the Hsüan Tê red in its use as a glaze

colour. Indeed, certain varieties of the _sang de bœuf_ class

are still distinguished as _chi hung_. The large bowls, “red as

the sun and white at the mouth rim,” as mentioned in the _Po wu yao

lan_, have a counterpart in the large bowl of the last dynasty with

_sang de bœuf_ glaze, which, flowing downwards, usually left a

colourless white band at the mouth.

The Hsüan Tê period extended only to ten years, and specimens of Hsüan

red are excessively rare to-day, even in China. It is doubtful if a

genuine specimen exists outside the Middle Kingdom, but with the help

of the old Chinese descriptions and the clever imitations of a later

date,[34] there is no difficulty in imagining the vivid splendours of

the “precious stone red” of this brilliant period.

Among the “blue and white” wares of all periods, the Hsüan Tê

porcelain is unanimously voted the first place by Chinese writers, and

its excellence is ascribed principally to the superior quality of an

imported mineral variously described as _su-ni-p’o_, _su-p’o-ni_ and

_su-ma-ni_. These outlandish names are, no doubt, attempts to render

in Chinese the foreign name of the material, which was itself probably

the name of the place or people whence it was exported. There is little

doubt that this mysterious substance was the same species as the

Mohammedan blue (_hui hui ch’ing_) of the following century. Indeed,

this latter name is applied to it in Hsiang’s Album. The Mohammedan

blue was obtained from Arab traders, and its use for painting on

pottery had been familiar in the Near East, in Persia and Syria for

instance, at least as early as the twelfth century.[35] The _su-ni-p’o_

blue was no doubt imported in the form of mineral cobalt, and though

there was no lack of this mineral in the neighbourhood of Ching-tê

Chên, the foreign material was of superior quality. It was, however,

not only expensive but unsuited for use in a pure state. If applied by

itself, it had a tendency to run in the firing, and it was necessary

to blend it with proportions of the native mineral varying from one

in ten for the finest quality to four in six for the medium quality.

The native mineral used by itself tended to be heavy and dull in tone,

owing to its inability to stand the intense heat of the kiln, and was

only employed alone on the coarser wares. The supply of Mohammedan

blue was uncertain and spasmodic. It ceased to arrive at the end of

the Hsüan Tê period, and it was not renewed till the next century (see

p. 29). Its nature, too, seems to have varied, for we are expressly

told that the Hsüan Tê blue was pale in tone while the Mohammedan

blue of the sixteenth century was dark. Possibly, however, this was

not so much due to the nature of the material as to the method of its

application, for Chinese writers are by no means unanimous about the

paleness of the Hsüan Tê blue. The _Ch’ing pi ts’ang_, for instance,

states that “they used _su-p’o-ni_ blue and painted designs of dragons,

phœnixes, flowers, birds, insects, fish and similar forms, deep and

thickly heaped and piled and very lovely.”

Authentic specimens of Hsüan Tê blue and white are virtually unknown,

but the mark of the period is one of the commonest on Chinese porcelain

of relatively modern date. In most cases this spurious dating means

nothing more than that the period named was one of high repute; but

there is a type of blue and white, usually bearing the period mark of

Hsüan Tê, which is so mannered and characteristic that one feels the

certainty that this really represents one kind at least of the Hsüan

porcelain. It is usually decorated in close floral scrolls, and the

blue is light dappled with darker shades, which are often literally

“heaped and piled” (_tui t’o_) over the paler substratum.

I have seen examples of this style belonging to various periods, mostly

eighteenth century, but some certainly late Ming[36] (see Plate 67,

Fig. 4). Seven examples of Hsüan blue and white porcelain are figured

in Hsiang’s Album,[37] comprising an ink pallet, a vase shaped like a

section of bamboo, a goose-shaped wine jar, a vase with an elephant

on the cover, a tea cup, a sacrificial vessel, and a lamp with four

nozzles. In five of these the blue is confined to slight pencilled

borders, merely serving to set off the white ground, which is compared

to driven snow. The glaze is rich and thick, and of uneven surface,

rising in slight tubercles likened to “grains of millet.” This is the

“orange skin” glaze. The blue in each case is _hui hu[38] ta ch’ing_

(deep Mohammedan blue). Of the two remaining instances, one is painted

with a dragon in clouds, and the other with “dragon pines,” and in the

latter case the glaze is described as “lustrous like mutton fat jade,”

and the blue as “of intensity and brilliance to dazzle the eye.”

The impression conveyed by all these examples is that they represent a

type quite different from that described as “heaped and piled,” a type

in which delicate pencilling was the desideratum, the designs being

slight and giving full play to the white porcelain ground. It is, in

fact, far closer in style to the delicately painted Japanese Hirado

porcelain than to the familiar Chinese blue and white of the K’ang Hsi

period.

Plate 60 illustrates a little flask-shaped vase in the Franks

Collection, which purports to be a specimen of Hsüan Tê blue and white

porcelain. It has a thick, “mutton fat” glaze of faint greenish tinge,

and is decorated with a freely drawn peach bough in underglaze blue

which has not developed uniformly in the firing. The colour in places

is deep, soft and brilliant, but elsewhere it has assumed too dark a

hue.[39] Its certificate is engraved in Chinese fashion on the box

into which it has been carefully fitted--_hsüan tz’ŭ pao yüeh p’ing_,

“precious moon vase of Hsüan porcelain”--attested by the signature

Tzŭ-ching, the studio name of none other than Hsiang Yüan-p’ien, whose

Album has been so often quoted. Without attaching too much weight to

this inscription, which is a matter easily arranged by the Chinese,

there is nothing in the appearance of this quite unpretentious little

vase which is inconsistent with an early Ming origin.

On the same plate is a brush rest in form of a log raft, on which is a

seated figure, probably the celebrated Chang-Ch’ien, floating down the

Yellow River. The design recalls a rare silver cup of the Yüan dynasty,

which was illustrated in the _Burlington Magazine_ (December,

1912). Here the material is porcelain biscuit with details glazed and

touched with blue, and the _nien hao_ of Hsüan Tê is visible on

the upper part of the log beside two lines of poetry. Whether this

brush rest really belongs to the period indicated or not, it is a rare

and interesting specimen. Two other possible examples of Hsüan Tê blue

and white are described on p. 32.

[Illustration: PLATE 62

Barrel shaped Garden Seat: porcelain with coloured glazes on the

biscuit, the designs outlined in slender fillets of clay. A lotus

scroll between an upper band of clouds and a lower band of horses

in flying gallop and sea waves. Lion mask handles. About 1500

A.D.

Height 14¼ inches. _British Museum._]

As to the other types of Hsüan ware named in the _Po wu yao lan_,

with one exception I can find no exact counterpart of them in existing

specimens, though parts of the descriptions are illustrated by examples

of apparently later date. Thus the form of the white tea cups, “with

rounded body, convex base, and thread-like foot,” is seen in such bowls

as Fig. 1 of Plate 74, which is proved by its mount to be not later

than the sixteenth century. Other examples of these bowls will be

discussed later. They are characterised by a convexity in the centre

which cannot be shown in reproductions.

The secret decoration (_an hua_) consists of designs faintly traced

usually with a sharp-pointed instrument in the body and under the

glaze. There is an excellent example of this in a high-footed cup in

the Franks Collection which has the Hsüan Tê mark, the usual faintly

greenish glaze, beneath which is a delicately etched lotus scroll

so fine that it might easily be overlooked and is quite impossible

to reproduce by photographic methods. It is, no doubt, an early

eighteenth-century copy of Hsüan ware.

The one exception mentioned above is the type represented by the

“barrel-shaped seats.” The description of these leaves no room for

doubt that they belonged to a fairly familiar class of Ming ware, whose

strength and solidity has preserved it in considerable quantity where

the more delicate porcelains have disappeared. Plate 62 gives a good

idea of the Ming barrel-shaped garden seat, “with solid ground filled

in with colours in engraved floral designs.” The other kind, “with

openwork ground, the designs filled in with colours (_wu ts’ai_),

gorgeous as cloud brocades,” must have been in the style of Plate 61.

These styles of decoration are more familiar to us on potiche-shaped

wine jars and high-shouldered vases than on garden seats, but the type

is one and the same. Quite a series of these vessels was exhibited at

the Burlington Fine Arts Club in 1910, and they are fully described

in the catalogue. Some had an outer casing in openwork; others had

the designs outlined in raised threads of clay, which contained the

colours like the ribbons of cloisonné enamel[40]; in others, again,

the patterns were incised with a point. The common feature of all of

them was that the details of the pattern were defined by some emphatic

method of outlining which served at the same time to limit the flow

of the colours. The colours themselves consist of glazes containing a

considerable proportion of lead, and tinted in the usual fashion with

metallic oxides. They include a deep violet blue (sometimes varying to

black or brown), leaf green, turquoise, yellow,[41] and a colourless

glaze or a white slip which served as white colour, though at times the

white was represented merely by leaving the unglazed body or biscuit to

appear. These coloured glazes differ from the on-glaze painted enamels

in that they are applied direct to the body of the ware, and are fired

at a relatively high temperature in the cooler parts of the great

kiln, a circumstance expressed by the French in the concise phrase,

_couleurs de demi-grand feu_.[42]

The central ornament consisted chiefly of figures of sages or deities

in rocky landscape, or seated under pine trees amid clouds, dragons in

clouds, or beautiful lotus designs; and these were contained by various

borders, such as floral scrolls, gadroons, _ju-i_ head patterns,

fungus scrolls, and symbols hanging in jewelled pendants. As a rule,

the larger areas of these vases are invested with a ground colour and

the design filled in with contrasting tints. Sometimes the scheme of

decoration includes several bands of ornament, and in this case--as

on Plate 62--more than one ground colour is used. The _Po wu yao lan_

speaks of green (_ch’ing_) and dark blue (_lan_) grounds, and existing

specimens indicate that the dark violet blue was the commonest ground

colour. Next to this, turquoise blue is the most frequently seen; but

besides these there is a dark variety of the violet which is almost

black, and another which is dark brown, both of which colours are based

on cobaltiferous oxide of manganese. It has already been observed that

this type of decoration was frequently used on a pottery body as well

as on porcelain.

The question of the antiquity of the above method of polychrome

decoration is complicated by the contradictory accounts which Dr.

Bushell has given of a very celebrated example, the statuette of

the goddess Kuan-yin in the temple named Pao kuo ssŭ at Peking.

The following reference to this image occurs in the _T’ung ya_,

published in the reign of Ch’ung Chêng (1625–1643): “The Chün Chou

transmutation wares (_yao pien_) are not uncommon to-day. The Kuan-yin

in the Pao kuo ssŭ is a _yao pien_.” Dr. Bushell, who visited the

temple several times, gives a minute description of the image, which

contains the following passage[43]: “The figure is loosely wrapped in

flowing drapery of purest and bluest turquoise tint, with the wide

sleeves of the robe bordered with black and turned back in front to

show the yellow lining; the upper part of the cloak is extended up

behind over the head in the form of a plaited hood, which is also

lined with canary yellow.” To the ordinary reader, such a description

would be conclusive. A fine example of Ming porcelain, he would say,

decorated with the typical coloured glazes on the biscuit. Bushell’s

comment, however, is that the “colours are of the same type as those

of the finest flower pots and saucers of the Chün Chou porcelain of

the Sung dynasty.” It should be said that the temple bonzes insist

that they can trace the origin of the image back to the thirteenth

century. If these are indeed the typical Chün Chou glazes, then all

our previous information on that factory, including Bushell’s own

contributions, is worthless. In another work,[44] however, the same

writer states that it (the image in question) is “really enamelled in

'five colours’--turquoise, yellow, crimson, red brown and black.” This

is precisely what we should have expected, and it can only be imagined

that Bushell in the other passage was influenced by the statement in

the _T’ung ya_ that it was a furnace transmutation piece, a statement

probably based on the superstition that it was a miraculous likeness

of the goddess, who herself descended into the kiln and moulded its

features. As to the other temple tradition, that it was made in the

thirteenth century, it is not necessary to take that any more seriously

than the myth concerning its miraculous origin, which derives from the

same source.

It is hardly necessary to state that all the existing specimens of this

class (and they are fairly numerous) do not belong to the Hsüan Tê

period. Indeed, it is unlikely that more than a very small percentage

of them were made in this short reign. Whether the style survived the

Ming dynasty is an open question; but it is safe to assume that it was

largely used in the sixteenth century.

The discussion of this group of polychrome porcelain leads naturally

to the vexed question of the introduction of enamel painting over the

glaze. By the latter I mean the painting of designs on the finished

white glaze in vitrifiable enamels, which were subsequently fixed in

the gentle heat of the muffle kiln (_lu_)--_couleurs de petit feu_, as

the French have named them. No help can be got from the phraseology of

the Chinese, for they use _wu ts’ai_ or _wu sê_ (lit. five colours)

indifferently for all kinds of polychrome decoration, regardless of

the number of colours involved or the mode of application. There is,

however, no room for doubt that the delicate enamel painting, for which

the reign of Ch’êng Hua (1465–1487) was celebrated, was executed with

the brush over the fired glaze. It is inconceivable that the small,

eggshell wine cups with peony flowers and a hen and chicken “instinct

with life and movement” could have been limned by any other method.

If this is the case, then what could the Chinese writers mean when

they contrasted the _wu ts’ai_ ornament of the Hsüan Tê and Ch’êng

Hua periods, but that the same process of painting was in use in both

reigns? The Ch’êng Hua colours were more artistic because they were

thin and delicately graded, while the Hsüan Tê _wu ts’ai_ were too

thickly applied.[45] For this reason, if for no other, we may rightly

infer that painting in on-glaze enamels was practised in the Hsüan Tê

period, if, indeed, it had not been long in use.[46]

There is another and an intermediate method of polychrome decoration

in which the low-fired enamels (_de petit feu_) are applied direct to

the biscuit, as in the case of the _demi-grand feu_ colours, but with

the difference that they are fixed in the muffle kiln. This method was

much employed on the late Ming and early Ch’ing porcelains, and it will

be discussed later; but it is mentioned here because there are several

apparent examples of it in Hsiang’s Album, one[47] of which is dated

Hsüan Tê. The example in question is a model of the celebrated Nanking

pagoda, and it is described as _wu ts’ai_, the structure being white,

the roofs green, the rails red, and the doors yellow, while the date

is painted in blue. I have hesitated to assume that this is intended

to represent an on-glaze painted piece, though there is much in the

description to indicate such a conclusion; but it is certainly either

this or a member of the class under discussion, viz. decorated in

enamels of the muffle kiln applied to the biscuit.[48] In either case

it proves the knowledge of vitrifiable enamels at this period to all

who accept the evidence of Hsiang’s Album.

Examples of Hsüan Tê polychrome porcelain enumerated in the _T’ao

shuo_ included wine pots in the form of peaches, pomegranates,

double gourds, a pair of mandarin ducks and geese; washing dishes (for

brushes) of “gong-shaped outline,” with moulded fish and water-weeds,

with sunflowers and with lizards; and lamp brackets, “rain-lamps,”

vessels for holding bird’s food, and cricket[49] pots (see vol. i, p.

188).

Specimens of on-glaze painted porcelain with the Hsüan Tê mark are

common enough, but I have not yet seen one which could be accepted

without reserve. Perhaps the nearest to the period is a specimen in the

Franks Collection, a box made of the lower part of a square vase which

had been broken and cut down. It was fitted with a finely designed

bronze cover in Japan, and it is strongly painted in underglaze blue

and the usual green, yellow, red and purple on-glaze enamels. The mark

is in a fine dark blue, and the porcelain has all the character of a

Ming specimen.

There is, in the same collection, a dish of a different type, but

with the Hsüan Tê mark in Mohammedan blue and other evidences of Ming

origin. The glaze is of a faintly greenish white and of considerable

thickness and lustre, and the design consists of lotus scrolls in gold.

Painting in gold in the Hsüan Tê period is mentioned in the _T’ao

shuo_[50] in connection with the pots for holding the fighting

crickets alluded to above.

Chinese pottery and porcelain; vol. 2. Ming and Ch'ing Porcelain · 第 2 / 19 章