How old is china, and japan?

Question

Today i was wondering how old china is, Because i love learning about Geology. I think it is really fun! the reason i wanna learn more about Geology, is because im horrible at it! lol i hope you can learn about geology with me! and have an amazing day/night :)

Answer 1

idk but i know that there were many eras!
my favorite Chinese/Asian era was the Tishu Era!!!

(it may or may not be bcuz Demon Slayer is set it the Tishu era-)