Zhao Zhang, a graduate student in the history department, woke up and found himself lying on Song Zhenzong's dragon bed. The Chanyuan Alliance is about to be signed, and the humiliation of the year is just around the corner. He went through the account books of the three divisions and found out the vacancies of 120,000 forbidden troops; he summoned Kou Zhun and centralized the power of the Beiting Military Affairs Department against the Liao Dynasty; he stood at the head of Chanzhou City for a full hour and signed a peace treaty without annual coins. From Zhenzong to Renzong, from Yingzong to Shenzong, from Wuzong's expansion of land to Shizu's Dingding - one hundred and seventy years, seven generations of wise kings, and gains from generation to generation. Qingli's New Deal took root, Xining's reform was successful, Yanyun was recovered, Xixia was destroyed, the Jin Kingdom surrendered, the Western Regions returned to its borders, the two capitals stood side by side, and the sea and land opened up. This is not a person's time travel history, but a dynasty's relay of seven generations, starting from standing at the top of Chanzhou City, and moving step by step towards the iron tripod that will last forever.