The Double Ninth Festival is one of the traditional ancestral festivals in China, so it is to commemorate the dead. In ancient times, the sacrificial custom of the Double Ninth Festival was very popular, with different customs in different places and different forms of ancestor worship. People also have the custom of climbing on that day, so the Double Ninth Festival is also called "Climbing Festival". During the Double Ninth Festival, there are many activities, such as climbing mountains, enjoying chrysanthemums, drinking chrysanthemum wine, eating double ninth cake and inserting dogwood.

In the modern sense, this festival has been given a new meaning, and it is more about advocating the whole society to establish an atmosphere of respecting, loving and helping the elderly, which has become the "Festival for the Elderly" in China. Double Ninth Festival, because "Double Ninth Festival" is homophonic with "long time", and 9 is the largest number in numbers, which means longevity and longevity, and autumn is also the golden season of harvest in a year, so "Double Ninth Festival" is considered as a good day to wish the elderly a long life.