The Double Ninth Festival, also named Chongyang Festival, falls on the ninth day of the ninth month of the Chinese lunar calendar, hence it gets name of Double Ninth Festival.
Legends
Once there was a man named Heng Jing, who believed that a monster would bring pestilence , He told his countrymen to hide on a hill while he went to defeat the monster. Later, people celebrated Huan Jing's defeat of the monster on the ninth day of the ninth.
Customs
The Double Ninth Festival is usually perfect for outdoor activities. Many people go hiking and climbing in the countryside. On this day, people will eat Double Ninth Cake. Enjoying the flourishing chrysanthemum also becomes a key activity on this festival.