The Spring and Autumn Period：the real intention is revealed in the end 圖窮匕見

At the end of the Warring States period, the state of Qin kept sending troops to occupy other countries. In order to resist Qin, Prince Dan of Yan asked Jing Ke to assassinate the King of Qin. Jing Ke and his assistant Qin Wuyang bring the head of Fan Yuqi and a map of the Dugang region of Yan to the King of Qin. The king of Qin was very happy to know about this and received them.