杜 Strokes Write it Listen 杜 dù to prevent, to restrict, to stop; surname HSK 7–9 7 strokes Radical 木 Sound + meaning 1 word Built from木meaningmùtree; wood, lumber; wooden土soundtǔsoil, earth; items made of earth How it works木 hints at the meaning (tree), and 土 tǔ hints at the sound.