增 Strokes Write it Listen 增 zēng (bound form) to increase; to augment; to add to HSK 3 15 strokes Radical 土 Sound + meaning 12 words Built from土meaningtǔsoil, earth; items made of earth曾soundcéngalready, formerly, once; the past How it works土 hints at the meaning (earth), and 曾 céng hints at the sound.