In the seventeenth year of Tonghe (in 999, in the second year of Xianping), the Liao army went south, and Kangbao people were deployed in Yingzhou to capture Song Gaoyangguan. In 19, it was in Yukou and Yijin than Song Jun. In the twenty-first year, Nanjing unified the army to attack and capture the deputy deployment of Song Dynasty, so that the front of the temple and Yunzhou were guarded. Twenty-two years in September, Xiao Chuo, the three emperors and the Empress Dowager, led troops south and attacked Sui City, Wang Du, qi zhou, Dingzhou, Yingzhou, Xia Deqing and Enemy at the Gates. Song Tinglan shook. Under the auspices of Prime Minister Kou Zhun, Song Zhenzong marched in person, facing each other across the river. LiLin Xiao, commander-in-chief of the Liao Dynasty, left the camp and accidentally touched Fu Nu, Song Jun, and died of serious injuries, which frustrated the morale of the Liao army. Wang Jizhong took the opportunity to mediate between the North and the South, and sent a letter to inform the Liao side of its intention to block the people. Song Zhenzong also replied that he was willing to stop fighting to protect the people. Therefore, discussions and envoys frequently exchange views. Liao demanded to recover the land of Guannan, which was cut off by the late Jin Dynasty, and Song refused to give an inch of land, at the expense of gold and silk. After repeated negotiations, Song finally agreed to provide military assistance to Liao, and the military confrontation between the two sides ended.