After looking at several websites, I would say that this one is the best one. It can be great for both teachers and students. I really think that this is really resourceful because you click on a topic and it will send you to another website in which will give you more in depth information on what it is that you are looking for. It has anything from facts, pictures, teacher resources, activities and much more. I really recommend educators looking at this website when doing a unit on China.
http://webtech.kennesaw.edu/jcheek3/china.htm