The bronze coin of Chu State imitated the sea shell had many names. “Yi Bi” coin, thepopular namel should be the best one which means smaller. “San Zi Bet” (Shell money withcharacter “three” ) is an independent type. Another kind of shell money with a character onthe reverse should be explained as “Xi” but not “Tao”. The bronze coin of Chu State imitated the sea shell had many names. “Yi Bi ” coin, thepopular namel should be the best one which means smaller. “San Zi Bet ” (Shell money withcharacter “three ”) is an independent type. Another kind of shell money with a character on the reverse should be explained as “Xi ” but not “Tao ”.