1. Drink chrysanthemum wine: In ancient times, chrysanthemum wine was specially brewed for the first year of the Double Ninth Festival. On September 9th, people picked chrysanthemums and a little green branches and leaves, mixed them with grain for brewing, and then used them together to make wine, which will be drunk on September 9th next year. It is said that drinking this wine can prolong life.

2. Flower cake: Respect the elderly on the Double Ninth Festival, and climb high to avoid disasters. "Gao" and "Gao" are homophonic, and they also mean "step by step" and "long life", so "Chongyang Flower Cake" has become a popular holiday food.

3. Crab: Crab is rich in protein, which is called high-quality protein food. The crab meat is delicate, and the fat content of the crab is very low, but the fat-soluble vitamins A, E and B are high, especially the crab yellow is rich in vitamin A, which is good for vision and skin health. This is of great benefit to those who need supplementary nutrition.