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The original translation name of Guanyin is Guanyin, which is a free translation of Sanskrit "A Tie Lu Zhi's logic of low humidity cutting", which means "you can immediately remove the sound at first sight". In the Tang Dynasty, in order to avoid Taizong Li Shimin, the word "world" was removed, so it was called Guanyin for short.
Guanyin is a very worshipped bodhisattva in Mahayana Buddhism. Almost all Buddhist temples in China have Guanyin statues, and there are also many worshippers of Guanyin among the people. For example, Tiantai Sect and Tantric Sect of Buddhism spread "six Guanyin" respectively, and Zen also shaped various Guanyin statues. Pure land Sect worships Guanyin as one of the "Three Saints of the West".
Since the Sui and Tang Dynasties, people have gradually formed a wide range of belief in Guanyin Bodhisattva and formed three major Buddhist festivals dedicated to Guanyin. February 19th of the lunar calendar is Guanyin Christmas, June 19th of the lunar calendar is Guanyin enlightenment day, and September 19th of the lunar calendar is Guanyin becoming a monk day. In some places, these three festivals are called Guanyin Bodhisattva Christmas.
On the day Guanyin became a monk, there were ceremonies of different sizes in temples all over China. General ceremonies include: singing "Xiangzan", chanting the name of Bodhisattva, "Mercy and Mercy Mantra", singing "Ode to Master Guanyin", "Guanyin Bodhisattva", chanting the name of Guanyin and praying for final conversion.
At present, there is no textual research on the origin and basis of Guanyin Bodhisattva's becoming a monk. During the three Buddhist festivals of Guanyin Bodhisattva, temples all over China will hold ceremonies of different sizes. Their general wishes are: singing "Zan", chanting the name of Bodhisattva, "Great Mercy Mantra", singing "Ode to Master Guanyin", "Song of Bodhisattva Guanyin", chanting the name of Guanyin, and praying for final conversion.
The incense party for the majority of Buddhists to celebrate Guanyin Christmas is called Guanyin Club. Putuo Mountain is the center of Guanyin Dojo, so it coincides with Guanyin Bodhisattva's Christmas Day, Guanyin Bodhisattva's Enlightenment Day and Guanyin Bodhisattva's becoming a monk day, which is the most solemn ceremony.
Refer to Baidu Encyclopedia-Guanyin becoming a monk day