Analysis:
According to legend, June 24th or 22nd of the lunar calendar is the birthday of Guan Yu, a famous scholar in Shu and Han Dynasties, so it is called "Guan Gong's birthday". Guan Yu was born loyal and died in Buddhist mythology, and was called one of Galatians with Guan Gong and Guan Di. Taoism also respects it as "the demon emperor is three worlds away from Megatronus Guan Shengdi"
All kinds of temples have been built in various places. It is said that Guandi can ward off evil spirits, and the "Guandi Temple Fair" will be held every May 13. According to Huai 'an folklore, this day is the day when Hiderigami, the monster who created drought, passed by. On this day, he offered sacrifices to Guandi, praying for him to show his spirit, drive away evil spirits, avoid disasters, shower with rain and relieve people's worries.
This day is also called "Guan Gong Sharpening Day". Generally speaking, it rains on this day, which is called "Rain Festival". There is an agricultural proverb among the people: "The drought is only May 13th". If it rains, it's called "Master Guan sharpening the knife and raining". It rains this day, and the weather is good all the year round.
Extended data:
Guan Yu's life: Guan Yu followed Liu Bei;
Guan Yu, formerly known as immortal, was later changed to Yun Chang. In his early years, he fled his hometown and came to Zhuo Jun in Youzhou. In the first year of Zhong Ping (184), the Yellow Scarf Uprising broke out, and Liu Bei organized volunteers in Zhuoxian.
Guan Yu and Zhang Fei all joined in and fought the Yellow Scarf Army around Liu Bei. Liu Bei, Guan Yu and Zhang Fei are so close that they even sleep together. When Liu Bei served as Prime Minister of Pingyuan, Guan Yu and Zhang Fei were appointed as Sima of other ministries, belonging to different ministries. When attending the event with Liu Bei, Guan Yu and Zhang Fei stood beside Liu Bei to protect him.
Baidu encyclopedia-Guan Yu
Baidu encyclopedia-Guan Gong's birthday