The sacrificial ceremony of Dongzhen Yishan is the "Wangzhi Ceremony" of the emperors of all dynasties to Dongzhen Yishan. Before the Shang and Zhou Dynasties, the sacrificial time was the second month of the lunar calendar, and after the Sui and Tang Dynasties, it was the "Lichun" of the lunar calendar. After the Republic of China, the folk sacrifice was on the eighth day of the fourth lunar month. Yishan, also known as Dongtai Mountain, was called "Haiyue" and "Shenyue" in ancient times. It is known as the "first of the five towns" and is located in the southern part of Linqu County, Shandong Province. According to the "Historical Records Fengshan Book", Huangdi first ascended Dongtai Mountain (i.e. Yishan); Shun sealed the mountain at the age of thirty and designated Yishan as an important town; and sacrificed to Yishan during the time of Yu. In the Han, Sui, Tang, Song, Yuan, Ming and Qing dynasties, Yishan was repeatedly enfeoffed, and the sacrificial ceremony was not abolished. Whenever there was a grand ceremony, such as the emperor's enthronement, or "unfavorable weather" or "lack of peace on earth", the emperor would lead his ministers in person or send important ministers to sacrifice to the eastern gods, and offer sacrifices to Dongyue Taishan, Dongzhen Yishan and Donghai in turn. The Yishan sacrifice has gone through five stages: totem worship, mountain shape sacrifice, mountain town sacrifice, Fengshan ceremony, and Yuezhen Haidu sacrifice. Since 1979, the "Dongzhen Yishan Sacrifice Ceremony" has been fully restored. The basic rituals are as follows: at 8 a.m., at the east gate of Yishan, a folk performance team of 600 people began to perform folk performances such as dragon lanterns, stilts, land boats, and lion dances; at 9 a.m., the main flag lit high incense in the Jade Emperor Pavilion, announced the start of the sacrifice, and the bells and drums rang; 16 emperors who had sacrificed and conferred titles on Yishan entered the sacrifice site in order of dynasties, and a team of 460 ancient warriors stood in position to accompany the sacrifice performance; the villagers of Yishan in Dongzhen offered sacrifices and wine; guests from the religious community and the four major town mountains presented flower baskets; three kowtows were performed; the main priest read the sacrificial text; a hundred people performed music and dance to offer sacrifices, and "Ode to Yishan" and other dances were performed in turn; the sacrifice lasted from 8 a.m. to 12 p.m.