Links for CJK compatible

統一碼相容字符 http://zh.wikipedia.org/zh-cn/%E7%B5%B1%E4%B8%80%E7%A2%BC%E7%9B%B8%E5%AE%B9%E5%AD%97%E7%AC%A6

This is what I have talked about at Beijing Perl Workshop 2009.