立此存照

http://zhang3.blog.edu.cn/user1/7869/index.shtml 

http://book.sina.com.cn/nzt/history/his/gengyiji/index.shtml 

http://www.luobinghui.com/ld/wm/200508/4340.html

http://www.tycool.com/guide/ny/21/334/ 

http://www.lifehacker.com/ 

http://etext.virginia.edu/chinese/frame.htm