Thức khuya dậy sớm

words are but wind

don't look a gift horse in the mouth, in for a penny, in for a pound

call a spade a spade

set a fox to keep one's geese, let wolf into the fold

once bitten, twice shy, a burned child dreads fire, a scalded cat fears hot water

the best cloth may have a moth in it

two in distress make sorrow less

things done cannot be undone

ill-gotten, ill-spent, easy come, easy go

cellulose casing