http://www.china.org.cn/top10/2011-03/04/content_22054243.htm
http://www.chinawhisper.com/top-20-ancient-chinese-inventions/
http://www.bcps.org/offices/lis/models/chinahist/dynasties.html
http://science.howstuffworks.com/innovation/inventions/10-ancient-chinese-inventions.htm
http://www.vhinkle.com/china/inventions.html
https://www.youtube.com/watch?v=AYQ1hcpUedU Confucius