The ancients thought that these three mountains were fairy mountains and immortals lived on them. If lucky people can climb the fairy mountain, they may get an elixir from the gods. At that time, Xu, also known as Xu Fu by later generations, cheated Qin Shihuang's trust with this bluff, and then went out with many travelling expenses and 3,000 virgins, but never came back. Although there are many legends about Xu Fu and these three thousand people, most of them have not been confirmed.

In fact, there are two theories about these three fairy mountains at present: one thinks that these three fairy mountains don't really exist, but were invented by ancient magicians to fool people, coupled with the popularity of all kinds of strange books. Second, Penglai actually refers to Penglai City, Shandong Province; The abbot is Kunlun Mountain, also known as Kunlunxu, which spans China, Qinghai, Sichuan, Xinjiang and Tibet. Yingzhou refers to Chongming Island in Shanghai.

In fact, these three fairy mountains have always been the gathering place of immortals in the novel. Even now, in many Xianxia dramas, Penglai and Kunlun Xu are on the list. When Xu Fu grasped Qin Shihuang's mentality of wanting to live forever, Qin Shihuang believed his story. I think it's easy to explain why Xu Fu disappeared: the harsh laws of the Qin Dynasty are well known. Chui fook see he can't finish the task, but he is rich, there are people. It's such a nice day, but why did he go back to prison?

It is said that there are some ways to prolong life in our society. Through the combination of diet and exercise, people can live longer, but if it is to make people live forever, it is still not up to the level, let alone the ancient medical level. So although so many emperors sent people to these three fairy mountains to seek the elixir of life, no one succeeded.