Appear at points which the enemy must hasten to defend; march swiftly
to places where you are not expected.
The original text, adopted by the _T‘u Shu_, has 出其所不趨; it has
been altered to suit the context and the commentaries of Ts‘ao
Kung and Ho Shih, who evidently read 必趨. The other reading would
mean: “Appear at points to which the enemy cannot hasten;” but in
this case there is something awkward in the use of 趨. Capt.
Calthrop is wrong of course with “appearing where the enemy is not.”