(For new reader and those who request 好友请求, please read my 公告栏 first).

The FORBES magazine, one of the leading financial journals in the US, publishes annually a list of all the rich people of the world. This year 42 Chinese Billionaires qualified (HongKong is in a separate category due to historically different economic situation). The youngest is 26 year old Ms Yan Huiyan with estimated net worth of  US$7.4 Billion (inherited from her father).

http://www.chinadaily.com.cn/china/2007-04/29/content_863758.htm

and the oldest is He Xiangjian (65 years old) & family at estimated US$2.0 billion

http://www.forbes.com/lists/2007/74/biz_07china_He-Xiangjian_BVD5.html