How can I link the multi-lingual website to member login section?

As I noticed, the files are link through the addons/member/config.php. How can I switch the languages?

I mean how to create such files:

http://www.xyz.com/en/member/login.php
http://www.xyz.com/cn/member/login.php

and etc.

Should I put 2 members folder in separate templates? English and Chinese template? If I do so, how to connect all the files together?

After the user login, it should able to redirect to en/ and cn/ page.

[trendoman]

Are you using extended-users or older member addon?

Just member addons.

Please save me from this. All the cms is ready but the member addons. I can find any methods to switch languages.