哨 Strokes Write it Listen 哨 shào to whistle; to chirp HSK 7–9 10 strokes Radical 口 Sound + meaning 1 word Built from口meaningkǒumouth; entrance, gate, opening肖soundxiàoto resemble, to look like; to be like How it works口 hints at the meaning (mouth), and 肖 xiào hints at the sound.