Zi Collection, Upper Volume, Page 31, Entry 02 Radical: Speech (yán) Pronounced yan (level tone) A large bamboo flute, one chi and four cun long. Also called a da xiao. "Large flute called a da xiao" — Er Ya (Erya) "Li Xun says: The large flute with a loud sound is called a da xiao." — Commentary on the Er Ya (Erya Shu)