As I understand there are 8 main cuisines, Fujian, Shandong, Szechuan, Guangdong(Cantonese), Anhui, Hunan, Jiangsu and Zhejiang. This evolved from 4 cuisines (Szechuan, Guangdong, Jiangsu and Shandong) which in turn evolved from 2 (simply north and south cuisines). Wikipedia describes Chinese cuisine quite well. Hope this helps to clarify.