"Xiang Yu wants to attack Pei Gong in the play" comes from Biography of Historical Records, in which "under the play" means underwater.

History of the Han Dynasty: Yu was furious and made others break through Hangu Pass and go to the war zone. Under the play here means underwater.

In addition, "under the scene" also means subordinates.

For example, "Historical Records Biography of Huaiyin Hou": "And Xiang Liang? Crossing the Huaihe River, the staff and sword will follow, and the play will be nameless. "