Introduction to Xianzetan: Xianzetan is the fifth well Longtan, also called Red Dragon Pool. Praying for the red dragon can make the family happy and the marriage happy, so this is a "happy" pool, and the five dragon gods are named Five Dragon Pools. At the time of the title, Emperor Huizong of the Song Dynasty named the Red Dragon God the King of Jiaze. Emperor Lizong of the Song Dynasty named Longtan, the fifth well, the Marquis of the Dragon God Yingze. Emperor Huizong of the Yuan Dynasty named him the Marquis of Guangshi Xianze.
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