@agriesser For example this is one of out students full name but also login username:
谭钦颖
The student is often underage, so there’s no email available here either(from where to extract a username) and a Pinyin version(latin names) of the fullname isn’t available always either.
In this context we are totally stuck and only left with the IDs generated by the database that are ASCII like those in the image.
Let me tell you that given that I’m a programmer, it’s been years that Unicode is totally feasible in usernames and URLs, the limit is the other parties implementations, which prefer to stick to ASCII and discard the inclusiveness of Unicode, imo.