Card 1581HSK 2010 Level 61581/2512
CARD1581
PROGRESS63%
伤脑筋
傷腦筋
shāng nǎo jīn
knotty; troublesome; bothersome

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d