The Video Shows Ancient Times, the First Emperor Broke the Defense!

[The male protagonist is a tool man, please don't be smart] Zhou Qingqing traveled through time. Traveled to a parallel world, only in the body of a 16-year-old boy. The system in her mind told her, "As long as you watch the video, you can get benefits." After saying that, the system left him and ran away! Zhou Qingqing had no choice but to watch the video... But he didn't know that a huge light curtain suddenly appeared in the sky of various dynasties in history. Project all the videos she sees! [What would happen if there had never been Qin Shihuang in Chinese history? Qin Shihuang Ying Zheng, "What? The death of Qin II?" Han Wu Emperor Liu Che, "My general, woo woo woo..." Tian Khan Li Shimin, "??????"...