In some places in the south, the gross profit of rice noodles is less than 30 cents, and a catty in the north can earn 1 yuan or even more.

Cold rice noodles can only earn two or three cents a catty in the north, and seven or eight cents in the south.

The profit of dumpling skin is not much different between north and south, about 5-7 cents.

Most of the sweet potato powder is mixed with other starches, otherwise there is no profit at all.