Baidu Baike
Baidu Baike and Hudong are both commercial products. Whereas the Chinese Wikipedia is released under the GNU Free Documentation License, Baidu Baike and Hudong are fully copyrighted by their ownership; contributors forfeit all rights upon submission. However, Baidu Baike has been accused of "widespread copyright infringement" by mass-copying Wikipedia pages and incorporating them into Baidu Baike pages since 2007.