Chinese username accepted?

[v0yager]

https://bitcointalk.org/index.php?action=profile;u=30817

I found this guy with Chinese username ,
However, I try to register a new one account with Chinese characters but it said " invalid character” ？  

[iVory1]

Maybe it's because back in 2011 chinese letters were not forbidden.

[goozman96]

Nice find! Interesting to see that they used to allow Chinese characters for registered. They probably put a stop to it to prevent spam/imposters/potential vulnerability against the forum - similar to how changing avatars are no longer allowed.

[theymos]

His username is different. That's his display name, which has more relaxed rules. In 2011 you could change your display name freely.