It is reported that in "Father of the Magic Way", the elixir is equivalent to the internal strength of a martial artist. Different from internal skills, people who lose the elixir can no longer practice, but can only increase their mana by crooked ways.

In the novel, when the Wen family in Qishan destroyed the Lotus Dock, a wanted order for Cheng Xian and his sister Jiang Yan was posted, while Wei Wuxian and Jiang Cheng could not leave the city because of the strict blockade, which means they were trapped in the Lotus Dock. Two people can temporarily hide in the Lotus Pier, but this is not a long-term solution.

Therefore, Jiang Cheng intends to go to Qishan to find trouble with the Wen family, but because the influence and strength of the Wen family in Qishan are too strong, Jiang Cheng's defeat has become an expected thing. Later, he was abandoned by the literati and began to be decadent all day, bent on death.

It was not until Wei Wuxian said that there was a way to help him go back that Jiang Cheng was relieved, but Wei Wuxian told Jiang Cheng that his mother was a disciple of the Tubo people, and Jiang Xin believed it. It is said that the Tibetan diaspora lived for hundreds of years, but all the people who died were living and bones. Wei Wuxian asked Jiang Cheng to lie that he was the son of Tubo scattered people when he met his grandmaster. I lied to Jiang Cheng, saying that there are many rules for going to the mountain to disperse people, so I have to cover my eyes when going up the mountain, so I can't see everything in the mountain clearly.

In fact, Wei Wuxian had already discussed with him. After sending Jiang Cheng up the mountain, he would go up the mountain from another road and let him exchange his elixir for Jiang Cheng. But he told Jiang Cheng that he was waiting for him in the town below the mountain, but Jiang Cheng didn't know that Wei had no envy at that time.