Imperial Chinese government records from 1827 were discovered by a professor of the Chengdu University, Wu Chung-chieh. Those records were congratulations to Li Ching-Yuen for his 150th birthday and also there were documents that were congratulating the same man for this 200th birthday.
In the neighborhood where Li Ching-Yuen grew up many old men actually knew him when they were boys. Li was herbalist and he began his herbalist career at very young age. He wanted to go for a walk in the mountain and there he had many different herbs to choose from.