Cultural Revolution
http://library.thinkquest.org/26469/cultural-revolution/history.html
http://www.morningsun.org/stages/history_for_the_masses.html
Bei Dao
http://quod.lib.umich.edu/cgi/t/text/text-idx?c=jii;cc=jii;idno=4750978.0002.102;view=text;rgn=main
http://www.kirjasto.sci.fi/beidao.htm
http://prelectur.stanford.edu/lecturers/dao/
http://prelectur.stanford.edu/lecturers/dao/daoaudience.html
