2. From the political point of view, Qin was in the west of the Central Plains countries. After Qin annexed the vassal states, the Mausoleum of Qin Shihuang chose to sit west to east, in order to monitor the six countries after their death and prevent them from resisting. The Terracotta Warriors and Horses placed in the East not only showed Qin Shihuang's great achievements in sweeping the six countries, but also hinted that Qin Shihuang wanted future generations to rule the world forever and prevent the six countries from recovering.