Ministry of Education《Dictionary of Chinese Idioms》

to break off with one's friend

to be resolute and decisive to hack and chop heavily

a master show his talent easily and briefly

to be resolute and decisive

to get things from another person for himself

deep to the core in frank speaking

painfully sorrow

cunning to be sly and shrewd

with a murderous heart under a smiling exterior

using inproper methodsa unsuitable way to do something