Cicada <- Mantis <- Oriole <- Courtier <- Pond, of which only the first three are explicit...
I did once run across some nice phrases at the end of a karate book, which (judging by the lack of hiragana) had been lifted, unattributed, from a chengyu-style source.
If we take 4-word to be the equivalent of 4-character:
Parry? Wait 'til late
Your lunge surprises yourself
Champion with two techniques
(hmm, that worked better than I thought it might!)
Fencing chengyus should be a thing!
Koryū arts should have had tonne of it tho that you could transplant wholesale?
Placeholder for the wisdom of making exceptions for Atticus (in the name of Harper's stand-in-- so precluding cognizance of any sort of repentance?)