Except that's not what "concave" and "convex" look like. It also means that you need to agree with everyone, what the meaning of every symbol is. For instance

Except that's not what "concave" and "convex" look like. It also means that you need to agree with everyone, what the meaning of every symbol is. For instance symbol of "convex" you give, might also be a street intersection, so you can't really just rely on the shape of a character, and you need to spend many years memorizing each one of them. If you look at reality, your assertion that > people from distant cultures [...] converge with the writen language is really not true. Chinese writing systems aren't universal in a way that makes them easy to pick up to express yourself in. Quite the contrary.