When did the emperors go to the Temple of Heaven to offer sacrifices every year during the Ming and Qing Dynasties?

According to the historical records of the Ming and Qing Dynasties, the worship of heaven in the winter solstice vault in the Ming and Qing Dynasties inherited the most important form of ancient suburban worship, and the etiquette was extremely grand and complicated. Specifically, in the first month of the lunar calendar, the emperor will go to the Hall of Prayer for the New Year to hold a prayer ceremony for the valley, praying for God to bless the bumper harvest of the grain; On April auspicious day, a Waqiu ceremony will be held to pray for rain in Cooper; On the solstice of winter, a memorial ceremony will be held in Waqiu to tell you that there are abundant crops and thank God.

According to historical records, the official activities of offering sacrifices to heaven and earth can be traced back to the Xia Dynasty, which was still in a slave society in 2000 BC. The ancient emperor of China called himself "the son of heaven" and was very devout to heaven and earth. The Temple of Heaven was built in imitation of Nanjing in the 18th year of Yongle in the Ming Dynasty (1420) to worship the afterlife of the emperor.

Extended data:

The Temple of Heaven is called a place to worship heaven. According to the Book of Changes, the southeast is the location of the Imperial Palace, the location of the sun, and the most abundant location of the sun. Of course, it is the best place to build a place to worship heaven. Therefore, the Temple of Heaven was chosen by the ancients to be a little east of the central axis in the south of Beijing.

After the Qing court entered the customs, everything was still in accordance with the old system of the Ming Dynasty. During the Qianlong period, the national strength was strong and the Temple of Heaven was built. In the twelfth year of Qianlong (1747), the emperor decided to rebuild the inner and outer walls of the Temple of Heaven, changing the earth wall into city bricks, and wrapping two layers of city bricks from the middle to the top. The width of the top of the inner altar wall is reduced to 4 feet 8 inches, and there are no eaves columns, making it a hanging gallery without colonnade. After the reconstruction, the inner and outer walls of the Temple of Heaven are thicker, and the GAI is more than ten miles long, making it a magnificent scenery. The main buildings of the Temple of Heaven, such as the Hall for Praying for the New Year, the Imperial Palace and the Dome, were also rebuilt at this time and have been preserved to this day.

Baidu Encyclopedia-Emperor Sacrifices to Heaven