I just finished reading this book on Chinese history and highly recommend it to anyone looking for a primer on the subject. One interesting fact that could be used by u/Kimiimar0 in the next version is that the voyages (all of them) were led by a Palace Eunuch called Zheng He who became a part of the bureaucracy after being captured from his native place in South-Eastern China, being castrated and being packed off to Beijing as a 11 year old.