User talk:NNUCSL10CatherineLuo24110123

Hi, thanks for adding text to School and university projects/NNU Class Project/Winter 2012/Drafts/Yu Shangyuan. Where did you facts come from? This is what those references are for, so that you can say which book or website the information came from. Graeme Bartlett (talk) 11:31, 4 March 2012 (UTC)