Who is the prototype of Xu Xian in The Legend of the White Snake?

The earliest record of the white snake began in the Tang Dynasty, and there was a story called "White Snake" in the legend of the Tang Dynasty. In this version of the story, Xu Xian is not infatuated, the white snake is cruel, and Fahai is a good man.

It's about a controller named Xi Xuanzan, who likes to play around. When I was in Tomb-Sweeping Day, I went to the Qiantang River West Lake on a whim.

When I passed the broken bridge, I saw everyone crowded together. Xi Xuan Zan also leaned in to see, I saw a woman in white, claiming to be surnamed Bai, living by the lake.

The white snake is not alone in this story. She has a mother-in-law and a daughter. Xi Xuanzang met the white snake's daughter, Mao Nu, who is still a kind demon.

Because Xuanzan saved her once, when White Snake and her mother-in-law designed to take Xuanzan back to kill him, Mao Anger saved Xuanzan.

Road flyover Xi first gave Xi Xuan Zan water and spit out the devil's saliva. In this way, a god was invited to accept a family of three. Mother-in-law is an otter, slave is a crow, and White Snake is a white snake.

Later, the Taoist priest built three stone pagodas and suppressed three monsters in the West Lake.

Judging from the role of Taoist Xi, it should be the prototype of the later Fahai.