潤滑油

lubricating oil

moist; glossy; sleek / to moisten; to lubricate / to embellish; to enhance / profit; remuneration / (neologism c. 2021) (slang) (loanword from "run") to emigrate (in order to flee adverse conditions)

smooth / oily / sleek / to lubricate

surname Hua

to slip; to slide / slippery; smooth / sly; slippery; not to be trusted

oil / fat / grease / petroleum / to apply tung oil, paint or varnish / oily / greasy / glib / cunning