xiāo sǎ
confident and at ease
free and easy
xiāo
(of water) deep and clear
(of wind and rain) howling and pounding
(of light rain) pattering
Xiāo xiāng
other name of the Xiangjiang river 湘江[Xiang1 jiang1] in Hunan province
xiāo xiāo xì yǔ
the sound of light rain or drizzle (idiom)