On the tenth day of the first month, there is a custom of "mice get married and eat oat noodles" in central and western Inner Mongolia, northern Hebei and Shanxi. It is said that people can eat oatmeal noodles on this day, which can ensure good weather and a good harvest for farmers.

According to folklore, the tenth day of the first month is the day when mice marry their wives. Every family should eat oatmeal to celebrate the wedding of mice, so as to ensure good weather and abundant crops. This folklore has continued to this day. On the 10th day of the first month of every year, all families in Hohhot must eat oatmeal noodles.

Yóu flour is flour processed from naked oats, which is the general name of naked oats pasta in northern Shanxi, southeastern Inner Mongolia and northwestern Hebei. Oil cotton contains calcium, phosphorus, iron, riboflavin and other nutrients and pharmaceutical ingredients needed by the human body. Oil cotton also contains a special substance linoleic acid, which has obvious effect on human metabolism.