Abstract: During the years of Dazhong Xiangfu of the Song Dynasty, the Emperor Zhenzong conducted the coming of Tianshu and Eastern and Western sacrifices, which were not to purge shame, not to prove the legitimacy, rationality and authority of Zhao Song Emperors power, and not to strengthen ideology or build spiritual beliefs of an ideological movement. These actions of Zhenzong are a means to solve the crisis of his own rule. From the beginning of Taizongs reign to his son, there was a hidden crisis in the rule of Song Dynasty. After the succession of Zhenzong, the crisis did not end, but deepened with the death of Zhenzongs sons and the conclusion of Weiyuan and alliance. In order to solve this crisis, Zhenzong and Wang Qinruo planned a farce about the coming of Tianshu, offering sacrifices to the East and the West, and pretending to be the sage ancestors. In the third year of Dazhong Xiangfu, and after Zhenzong had another son, the ruling crisis was finally solved, but it brought the Song government a bad political impact and a heavy economic burden, resulting in financial imbalance, anger and resentment, loss of peoples hearts, and ultimately contributed to the situation of poverty and weakness in the Northern Song Dynasty.

Key words: Song Zhenzong, enclosing Chan, Tianshu, ruling crisis, relation