Gao Taigong had no son, and wanted to recruit a son-in-law, but he didn't want to recruit Pig Bajie, so Pig Bajie was relegated to the lower bound. It's useless for Gao Taigong to find many wizards to subdue demons. Finally, the Tang Priest passed by, and the Monkey King became Miss Gao, which became a legend.
The Monkey King accepted Zhu's protection of Tang Priest's scriptures and stayed in Gaolaozhuang.
Extended data:
Lu Xun believes that the image of Pig Bajie evolved from ancient myths and legends in China, such as the story of "Golden Bell Pig Arm" in Gan Bao's Search for Ji Shen, and Kuang Yuan's Gossip about Pig Bajie supplemented Lu Xun's argument. He thinks that the sow sperm in Search of Ji Shen and The Scholar of Anyang Pavilion is closer to Pig Bajie.
Lu of Wu once mentioned that it was originally the immortal gate of Taoism. Chen Yinque's essay The Evolution of the Story of Xuanzang's Disciple's Journey to the West comes from Tang Yijing's translation of "Everything is Fundamental and Peneyer's Miscellaneous Work", Volume 3, "Buddhism should not be long".
Chen Yinque added: "The story of China people didn't make up the story of pigs marrying Bajie in Gaojiazhuang, and there was no such thing as pigs marrying in India ... This story was later said to have crossed the country because of homophones and became the height of Gaojiazhuang. Surprised the ladies-in-waiting, because things were similar, they got married. "