Ancestor worship ceremony in Huangdi's hometown on the third day of the third lunar month.

The ancestor worship ceremony in Huangdi's hometown is a ceremony for Chinese descendants to worship Huangdi in Xuanyuan Mountain (now Xiaxinzheng city, Zhengzhou City, Henan Province) since the Spring and Autumn Period and the Warring States Period. After the Tang Dynasty, it was upgraded to an official festival.

Xuanyuan Huangdi is the humanistic ancestor of the Chinese nation and the same ancestor of Chinese descendants. According to the Book of Changes and Historical Records/

The ancestor worship ceremony in the hometown of the Yellow Emperor carried forward the excellent traditional culture of the Chinese nation, remembered the achievements of ancestors, highlighted the theme of ancestor worship of the Chinese nation, and symbolized that the descendants of the Yellow Emperor are connected by blood and passed down from generation to generation.