The custom of eating cold noodles in the summer of solstice began in Wei and Jin Dynasties, flourished in Tang and Song Dynasties, and prevailed in the late Qing Dynasty.

Cold noodles, also called water, refer to noodles eaten cold. The ingredients include noodles, vegetables, Chili oil, edible salt, monosodium glutamate, peanuts, diced mustard tuber, soy sauce and sugar.