Interesting. It would be a different world if Chinese was written in cuneiform instead of those maddening pictograms.
The Chinese writing system was carefully designed so that it would be writeable in any of the languages of the empire (the agglutinative ones), and readable natively in any of them. So, it was possible to write in one’s own language, send the message across the kingdom, and have someone read it in their own language. There are some oddballs in practice, but basically, it was a brilliant achievement. Of course, I’m taking someone’s word for it who grew up in the US but has lived and worked in the Far East most of his adult life and became fluent in various languages there.