During the reign of Emperor Guangxu of the Qing Dynasty, Zhangku Avenue, known as the "Silk Road of the North", flourished. It was a trade and distribution route from Zhangjiakou to Kulun and extended to Russia. After a family change, Lv Junjie, the son of a wealthy businessman in Zhangjiakou, was forced to live on the grassland and started his legendary life on this road. However, the Qu family father and son who stole the Lv family's property never stopped persecuting him. For the sake of profit, they colluded with bandits and Japanese invaders and tried to kill Lv Junjie. Lv Junjie's brothers, wives, children, mentors and friends sacrificed one by one, and used their lives to protect the prosperity and prosperity of Zhangku Avenue. However, more people chose to stand by Lv Junjie's side, and built railways and commercial platforms with him, making great contributions to the country's border trade. After the outbreak of the Japanese invasion of China, Qu Shinian made a comeback, and the two sides launched a final contest. Lv Junjie was able to kill his enemy, and the years of blood feud finally ended in front of Dajingmen. Looking at the four big characters "Great Rivers and Mountains" on the Dajing Gate, Lu Junjie believes that China will one day recover its lost territory and the prosperity of Zhangku Avenue will reappear.