If the Chinese were so advanced 600 years ago, why did they slow down and let the West beat them??
Good question, in one of history’s more bizarre episodes, the Chinese turned inward when a new Dynasty emerged, they had their fleet burned, the same fleet that did travel the whole of the Indian Ocean, they had massive ships at the time.
Funny old world, China decided that they were the whole world and cut off contact with the world in their perceived perfection...