刷夜

刷夜	shuā yè	to stay up all night; to pull an all-nighter
刷	shuā	a brush / to paint; to daub / to brush; to scrub / (fig.) to remove; to eliminate (from a contest); to fire (from a job) / (onom.) swish; rustle / to swipe (a card) / to scroll on (a phone) / (gaming) to grind; to farm (for experience points, equipment, levels etc)
刷	shuà	to select
夜	yè	variant of 夜
夜	yè	night