see 竹马之交

An ugly face

double-dealing

утром одно，а вечером уже другое

childhood friend (idiom)

One's reputation is distinguished.

деланный(лицемерный)

indulge oneself

Flagrant offenses

the hundred schools of thought

Pure and clear

wiggly

concious of a kindness and acknowledging a duty to repay it

belecture(inculcate)

surpassingtheancientsand amazing the contemporaries (earthshaking)

Extremely evil

a great disparity in numerical strength

establish one's own school

Trim one's sails

self-absorption