成性

to become second nature / by nature

surname Cheng

to succeed / to finish / to complete / to accomplish / to become / to turn into / to be all right / OK! / one tenth

nature / character / property / quality / attribute / sexuality / sex / gender / suffix forming adjective from verb / suffix forming noun from adjective, corresponding to -ness or -ity / essence / CL:個|个[ge4]

(idiom) nurture makes second nature / good habits come by long assimilation

bloodthirsty

deeply ingrained / steeped in