Why did WU GANG cut down osmanthus trees?

Legend has it that WU GANG's wife had an affair with Sun Boling, the grandson of Emperor Yan. WU GANG killed Boling in a rage, angered the Sun God of Emperor Yan, and was sent to the moon to cut down immortal trees. However, laurel and cuttings hit it off. Every time WU GANG cuts an axe, the branches and leaves cut by the axe will grow back on the tree. After so long, WU GANG still failed to cut down the laurel tree. Feeling guilty, WU GANG's wife ordered her three sons to become toads, rabbits and snakes and fly to the moon to accompany WU GANG. In order to help his father cut down the osmanthus tree as soon as possible, Yutu kept mashing the cut branches and leaves.

Note: this is a derivative statement, which is the least credible.

"Shan Hai Jing Hai Nei Jing" said: Bo Ling, the son of Emperor Yan, married A Nv, the wife of Wu Quan, who was pregnant for three years and was born with drums, delay and death. The beginning is Hou, and drums and delays are chimes and musical forms.

Shan Hai Jing called it Wu Quan, and later people mistakenly named WU GANG Wu Quan.

Legend 2:

WU GANG, also known as Wu Quan, is a native of Xihe. Sun Boling, the son of Emperor Yan, had an affair with WU GANG's wife when he left home for three years in WU GANG, and gave birth to three children. WU GANG killed Boling in a rage, angered Emperor Yan, sent WU GANG to the moon, and ordered him to cut down the immortal tree-laurel. The laurel tree is 500 feet high and can be cut down together. Emperor Yan used this endless labor as a punishment for WU GANG.

WU GANG's wife also felt guilty about her husband's experience and ordered her three sons to fly to the moon to accompany WU GANG. One turned into a toad, one into a rabbit and one into a snake. See Shan Hai Jing.