Fruits suitable for eating during the Double Ninth Festival include pomegranates, figs, oranges, hawthorns and kiwis.

In ancient times, March 3rd of the lunar calendar was the big festival of spring, called Shangji; September 9th was the big festival of autumn, called Double Ninth Festival. It was gradually replaced by Qingming Festival, but the auspicious day "March 3" is still an important festival of Zhuang, Li, She and other ethnic minorities. September 9th has always been valued by people because the month and sun coincide with each other and it is autumn. "The Book of Changes" defines "Nine" as a yang number, and "Nine" is the largest yang number. The two nines are called "Double Nine", and the two yangs are called "Double Ninth", which can trigger many people's associations. . The Mid-Autumn Festival has passed and we have entered the peak of autumn. The seasonal changes have also caused people to lament about life. The intersection of various emotions has made the Double Ninth Festival develop into a festival mainly focused on entertainment. There are three items in the festival food folk customs, commonly known as: "Three Treasures".

First, people drink "chrysanthemum wine" on the Double Ninth Festival. Jiujiu has the same pronunciation with "Jiujiu" and "wine", hence the saying that Jiujiu drinks chrysanthemum wine. In the ninth month of the golden autumn, autumn chrysanthemums are proud of the frost. Literati call September the "Chrysanthemum Moon", and ordinary people call the chrysanthemum the "Nine Flowers". Beijing regards chrysanthemum as one of its city flowers. Due to its unique character of fighting cold, chrysanthemum has become a symbol of vitality. It had unusual cultural significance among the ancients, who believed it was a "life-extending guest" and an "ageless grass" that could make people grow older and stronger.

The second is to eat mutton noodles. "Sheep" and "Yang" are homophonic, corresponding to the Double Ninth Festival. To eat white noodles, "white" is the word "hundred" minus the "one" at the top, which means one hundred minus one is ninety-nine, in response to the "nine-nine" formula. The birthday of a ninety-nine-year-old man in Beijing is called "White Shou". Wealthy families can hold mutton-based banquets on that day, including fried, roasted, rinsed and even whole-lamb feasts. Autumn is the fattest season for sheep, and mutton is warm in nature and can keep out the cold.

The third is to eat flower cakes. During the Double Ninth Festival, people respect the elderly and climb high to avoid disasters. "Cake" has the same pronunciation as "高", and it also means "step by step promotion" and "longevity of ninety-nine years", so "Chongyang Flower Cake" has become a popular holiday food. In the crisp autumn air, people climb high to bid farewell to their youth, taste flower cakes, appreciate chrysanthemums and recite Tao Yuanming's poems, and hold various activities to respect the elderly, which are full of human affection. In southern my country, there is a common custom of planting dogwood to ward off evil spirits during the Double Ninth Festival. However, in Beijing, respecting the elderly is the main content, so there are more chrysanthemums and fewer dogwoods.