By default topic URLs contains slugs, But It’s not good if my slugs (titles) contains something that not present in english alphabet. 

for example my topic url(I'm chinese):

http://forum.stormfx.cn/community/vfx-ref/%E7%89%B9%E6%95%88%E8%B5%8F%E6%9E%90_april_01-2/  

it is very bad!

I want to set my url like:

http://forum.stormfx.cn/community/123/  

Thank you very much.