Zi Collection, Upper Volume, Page 23, Entry 01 Radical: Grass (cǎo) Pronounced bi (entering tone) Refers to the regrowth of grain seedlings. Also, Zi Collection, Upper Volume, Page 23, Entry 02 Radical: Grass (cǎo) Pronounced bo (entering tone) Refers to the appearance of grain seedlings standing upright and not clustered when they are heading.