Yanyun Changgexing

In the third year of the Qing Dynasty, Shi Jingtang introduced the Khitan to the pass, and the Sixteen Prefectures of Yanyun fell. Sixteen-year-old Yan Xingyuan stayed in the occupied Youzhou holding the "Mountains and Rivers Picture" left by his father. He wore Liao uniform, spoke Khitan dialect, worked as a minor official in the Liao Kingdom, and established the underground organization "Shanhe Society" under the supervision of Yingfang. A general during the day and a spy at night. He looks like a traitor during the day, but at night he becomes the real Youzhou native. When the king's master is unreliable, the emperor is unreliable, and the city wall is unreliable, how can a group of Yanyun remnants maintain their roots?