档 Strokes Write it Listen 档 dàng official records; grade (of goods); file HSK 6 10 strokes Radical 木 Sound + meaning 5 words Built from木meaningmùtree; wood, lumber; wooden当sounddāngappropriate, timely; to act, to serve; the sound of bells How it works木 hints at the meaning (wood), and 当 dāng hints at the sound.