China - Among the different civilizations today, the Chinese has a recorded history of 5000 years.
There was a legend that claimed the first emperor of China, Qin Shi Huang, sent an official with hundreds of young men and women on a sea voyage to find him the Elixir of Life. The Qin emperor wanted to live for eternity and was interested in alchemy. Those people never returned, because if they did, and without the elixir, they would be executed. It was said that they arrived in Japan and made it their home. As a result, there exist similarities between the Chinese and Japanese cultures.