The noodle in china is composed of two circles, the flour made and the rice flour made.

Their domain is divided into north circle and south circle by the Changjiang river in China. So from noodle we can aware the deep difference on dietetic custom between north China and south China.

Analyse from the geographic angle the climate of north China is dry for short of raining commonly. Contrarily, the southern is wet cause the plentiful raining. Different plants accommodate to different environments. So wheat is planted widely in north and the rice is major production of south agriculture in China.

Bothe of two circles of noodle has respective representative. They are the noodle in ShanXi province and the YunNan province, the leader of the north circle and the south circle, leading the development respectively of Chinese noodle in the pasted thousands of years. The elites of them are called with ShanXi XiaoMian and YunNan MiXian in Chinese pronounce.