HSK10+
hū
sad
口 Meaning component
kǒu
mouth
忽 Sound component
suddenly
唿
sad; (Cant.) a bit, part; to whistle (with fingers in one's mouth); (onom.) for the sound of the wind
(onom.) for the sound of the wind
唿哨
nowadays written 呼哨
Make Me a Hanzi
Unicode
CC-CEDICT
MTSU Chinese text computing