Hi Louis,
Here is a further explanation of my difficulty with the significance of "reserving strength."
First, I did not understand the passage to be referring to "reserving one's own strength," but rather to the opponent "reserving his strength" in response to one's own actions.
It seems that Cheng Man-Ch’ing is advocating not using excessive force in “leading,” because “otherwise, the other may know I’m leading him, then reserve his strength (xu qi li) and not advance.” Here then, the fact that the opponent “reserves strength” appears to be something you do not want to happen. But then when CMC says: “Reserving his strength, his position has already become a retreat,” it sounds like having the opponent “reserve strength” actually turns to your advantage.
Which do I want the opponent to do, “reserve strength” or “not reserve strength”; and why does that therefore support not using “excessive” force?
Perhaps my confusion comes with equating “withdrawing” earlier in the passage with “reserving strength.” I am interpreting “otherwise” as meaning: “if I use excessive force” and “may” as meaning: “will have the opportunity to.” I suppose “otherwise” might have a different reference and be interpreted as: “if I use only appropriate force,” and “may” might mean: “is permitted to.”
Does this make things any clearer?
Take care,
Audi

