语法选择The Chongyang Festival falls on the ninth day of the ninth lunar month.It is also called the Double Ninth Festival.As both the month and the day are nine，it got its name.Today ，people usually celebrate the day1 climbing mountains and enjoying chrysanthemum（菊花）， 2 the festival is also known as the Height Ascending（登高） Festival or the Chrysanthemum Festival.3 meaningful festival it is!
The festival has a history of over 2，000 4 .During the Warring States Period，there was the Chongyang Festival.But it was 5 celebrated in the imperial palace（皇宫）.From the Han Dynasty，it began to be very 6 among the common people.7 name of the Chongyang Festival first turned up in the Three Kingdoms Period.It was not set as a festival until the Tang Dynasty.Since then，all the people 8 the festival with different kinds of activities.
In the Ming and Qing Dynasties，people in the imperial palace all ate flower cakes to celebrate it.The emperors climbed mountains on that day as well.They believed 9 they could get good exercise and long life in this way.In 1989，the Chinese government set the day as the Seniors' Day.
As September has the clear sky and fresh air，it is a good time10 mountains.Also，it is good for our health.
