According to historical records, after the altar was built, the emperor went to the altar to worship the sun every year until the twenty-third year of Daoguang in the Qing Dynasty, that is, 1845. At that time, the commemorative ceremony was very grand. At the beginning of the ceremony, he Shao music was played, and the emperor and more than ten ministers slowly stepped into the altar. Just east of the altar, Daimyojin, the sun god, has been erected. The sacrificial vessels are all red, symbolizing the color of the sun. When all the sacrificial teams were in place, the loud voice of Zanyin Guan sounded: "In place-kneel, knock, prosper!" According to the instructions, the emperor respectfully bowed down before the throne, asking God to come down from the sky and offer jade and silk. After that, the emperor led the ministers to make the first, second and last sacrifices, bowing down and offering a title every time. Accompanied by the ceremony, 64 musicians and dancers danced martial arts dance and Wende dance under the altar, symbolizing martial arts and civilized world respectively. Both dances are beautiful, and the music that matches them is powerful, slow and solemn. Sacrificial ceremonies have always been valued by the royal family and are an important part of ancient China culture.