Chinese

		high and low	his; her; its his; her; its; theirs; that; such; it (refers to sth preceding it)	hand; convenient; -er
simp. and trad. (上下其手)		上下	其	手
Literally: “to raise and lower one's hand”.

Idiom

上下其手

1. to practice fraid; to manoeuvre for some evil end; to get up to tricks
2. to signal as conspiratorial hint