There are no empty seats.

can neither sleep nor sit still

have similar ideals and beliefs

disregard entirely

serve Qin in the morning and Chu in the evening

be full of resource

just and honourable

be greatly upset

be a proper punishment for one's bad behaviour

know yourself as well as the enemy

open its fangs and spread its claws

make the best use of one's time

look warily right and left

wears even a mountain away

to go and return without undue delay(tactlessness)

fool oneself as well as others

deliberately break the law

true skill and genuine knowledge

speak in a positive tone

pretend to be ignorant of sth.