Zi Collection, Upper Volume Radical: Grass (cǎo) Page 740, Entry 06 Pronounced dēng. "Shuoshu" describes "xū" and "tǎo" as items of felt. "Tongsuwen" states that the finer type of "xū" is called "tǎo". "History of the Later Han Dynasty - Biography of the Western Regions" mentions that Tianzhu (India) produces fine cloth and good "tǎo". The note explains that it is a woven mat made of hair. It is also written as "tǎo". "Old Yuefu" mentions "wǔ mù xiāng". "Leipian" describes "tǎo" as the appearance of withered feathers.