A Lifetime of Calamity

Zhang Dan, who had lived for 18 years, suddenly realized that he was not a human being, but an elixir, and that his grandfather was the famous Zhang Tianshi. Grandpa Zu said: "Elixir, if you want an elixir to ascend, you need to go through heavenly tribulations and accumulate merit, and you also have to go to school and take exams!" Since then, after five thousand years and three thousand realms of reincarnation, Zhang Dan used his spare time to become a little elixir who diligently helped people of all ethnic groups find things. Until one day, the Emperor of Heaven told Zhang Dan: "Now the three realms are facing annihilation. Little elixir, are you willing to save the world?" Zhang Dan said: "Your Excellency, the Emperor of Heaven, the little immortal has been looking for things for the world for half his life, but there is one thing that he has never found." "What?" "That heart that Xiaoxian will lose every time he reincarnates..."