xì
crack
crevice
gap or interval
loophole
discord
rift
kòng xì
crack
gap between two objects
gap in time between two events
liè xì
gap
slit
crack
crevice
fracture
bái jū guò xì
a white steed flits past a crack (idiom); How time flies!
xián xì
hostility
animosity
suspicion
chéng xì
to seize an opportunity
to exploit (a loophole)
sì xì
to wait for the opportunity
guān xìn sì xì
lit. to look for holes, and observe gaps (idiom); to search out one's opponent's weak points
to look for the Achilles heel