Wei Zi became a snake demon.

The Legend of the White Snake is a well-known legendary story in China, which is rich in plot and easy to arouse readers' interest. The transvestite love between White Snake and Xu Xian makes many people sympathize with each other. Since ancient times, the results of cross-dressing love are not good, either love ends in vain or separation from each other. Although the love between Bai Niangzi and Xu Xian didn't have a happy ending, Bai Niangzi gave birth to Wenquxing reincarnated in Xu Shilin, and finally successfully rescued Bai Niangzi who was suppressed under the Leifeng Pagoda. The reason why the White Snake can get pregnant and give birth to Xu Shilin is related to her real identity.

As we all know, the White Snake is a snake demon who has been practicing for thousands of years, but she is not an ordinary snake demon, but a snake at the foot of the Arctic Zhenwu Emperor, which was called Ziweixing in ancient times. The white lady with a thousand years' history came down to earth to practice. In The Legend of the White Snake, we find that Mrs White Snake's magic is powerful and mysterious. She is very proficient in Huang Qi's art. When encountering difficulties, there will be celestial celebrities to help, which can show that the identity of the White Snake is very unusual.

Another point is that when Bai Niangzi was practicing on earth, she met Fahai to catch ghosts. Originally, Fahai had the ability to kill the White Snake, but Fahai was worried about the true identity of the White Snake. In addition to the White Snake, she is also a member of the Arctic Zhenwu Emperor. It can be said that the direct leader of the White Snake is the Arctic Zhenwu Emperor, and he is also a person who cannot be offended. Fahai certainly can't afford to offend. In the end, the White Snake can only be suppressed under the Leifeng Tower.

To sum up, because of the true identity of the White Snake, she only came to earth to practice. Even if the Tao is profound and violates justice, Fahai cannot directly take the life of the White Snake. Instead, he suppressed it under the Leifeng Pagoda and helped the White Snake complete his practice. Because of the extraordinary identity of the White Snake, he was able to give birth to a son reincarnated by Wen Quxing and finally successfully rescued the White Snake.