The story takes place from the end of 783 to the middle of 784. Zhezhu, a mushroom elf in the pine forest of Zhongnan Mountain, is innocent, simple and willing to help others. After his death, the ancestor of the Song Demon left a secret book on the handle of a Tang sword and taught it to Zhezhu. According to legend in the elven world, those who get the secret book can break the limit of practice and practice magical skills. Houyuan coveted the secret book and used the elixir in exchange for Zhu Si's trust, so he was re-appointed by Zhu Si as the leader of the assassination organization "Invisible", who used the "invisibility" to hunt down the holder of the secret book. In order to avoid pursuit, Zhe Zhu embarked on a journey of escape. In the process, he experienced the love between Liu Shiyi and Tang Cheng. After Tang Cheng died, Zhe Zhu used the blade of the sword to collect his soul. After meeting Li Yichen twice, they secretly fell in love. As the Tang sword was unexpectedly unsheathed, the two learned that they were old friends, and their affection doubled. Guo Ying repeatedly confessed to Li Yichen but was rejected. Seeing that Li Yichen treated Zhe Zhu in a different way, he wanted to find Zhe Zhu to vent his feelings, but he was just singing alone. Because Zhu Si rebelled and Dezong was in trouble, Li Yichen made a plan to help Guo Xi regain Chang'an, which ended with Li and Li returning to Zhongnan Mountain.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
