You can look at my WikiTravel and Wikipedia wiki pages under the same name to see my profile.

Babel user information
en-N This user has a native understanding of English.
fr-3 Cet utilisateur dispose de connaissances avancées en français.
zh-2 这位用户的中文达到中级水平
wuu-3 箇位用户个吴语能力达到高等水平
Users by language

Note that I am unable to read/write in Chinese, although I can speak it.