>>212453524 (OP)Chinese actually did have to do that back in the day, except that failing to evade their word filters would have you executed.
Writing an emperor's given name was taboo, so you couldn't use whatever character were in his name, even if it was stupidly common like 民 people/folk.
Can't write it in any book, not even a dictionary, and if your name or surname includes a character like that - well, time to change your name.