How did the moon die in the peerless Tang Dynasty?

He is ill, about 200 years old, and his vitality is insufficient. He struggles with a lot of evil spirits and consumes too much vitality. Soon, his vitality was exhausted and he died of natural causes. At the end of his life, he merged with Huang Jinshu, resisted the beast tide together with Xuan Lao, sealed the emperor's heaven, and later helped Yu Hao to condense the second soul nucleus, and the soul completely disappeared.