Wei Collection, Middle Volume. Radical: Feather (yǔ). Kangxi brush strokes: 13. Page 957, Entry 15. Pronounced xiao. Pronounced xiao. Xiao xiao, the appearance of feathers that are tattered and worn. Book of Odes (Shijing), Bin Customs: My tail is tattered. Commentary: Tattered and worn. Also, pronounced you. The appearance of being swift and rapid. Zhuangzi, The Great and Most Venerable Master: Swiftly and rapidly went forth. Also, pronounced shu. The appearance of flying swiftly. Jade Chapter (Yupian): Sometimes also written in a variant form (shu). Also, pronounced yu. The meaning is the same.