1, Chongyang cake. Double ninth festival cake, also called flower cake, is the most traditional food in Double Ninth Festival. Since the Song Dynasty, it has the meaning of "rising step by step" because it is homophonic with "high".

2. crabs. Autumn wind, crab feet itch, old wine is mellow, osmanthus fragrance. Autumn is the most fertile season for crabs. Crab is also a seasonal food in autumn and one of the favorite seafood in the Double Ninth Festival.

3. Mutton noodles. Eating mutton noodles on the Double Ninth Festival is because the weather is getting colder and colder in autumn, so it is good for your health to eat mutton noodles, and it has gradually formed a way to eat mutton noodles. Pasta is the favorite of northerners.