Cassia-tree Moon – Wu Gang (Gobetsu in japanese) of the Han Dynasty studied Taoist magical practices, but abused his power. As a punishment, he was forced eternally to cut the cassia trees on the moon. As soon as he cut them, they grew back again. SIZE: 9.5 ins by 14 ins (25 cm by 35 cm). SERIES: 100 Aspects of the Moon.