Sky Screen: My History Videos Connect Every Dynasty Across the Myriad Worlds

In a parallel world, Lin Fan is bound to the Hyper-Temporal Historical Video System. The historical videos he creates are posted on a video platform, but they are also projected simultaneously onto the sky screens of every dynasty across history, with one emperor, one world, and one dynasty per screen. He can earn tips and cash out his share through the System. Qin Shi Huang sees the Qin dynasty collapse in its second generation and angrily smashes his jade seal. Emperor Wu of Han learns about the witchcraft disaster late in his reign and hastily changes his edict overnight. Emperor Taizong of Tang watches the golden age collapse amid the An Lushan Rebellion and weeps in dismay. As emperors from every dynasty tip him and beg for updates, Lin Fan receives a notification from the System: Your videos are quietly changing the course of history across all worlds...

One emperor, one world, one dynasty: Videos are sent to the myriad worlds on a one-emperor, one-world, one-dynasty basis. When a video mentions an emperor, it is shown only to that emperor in that world's present day. The videos never show the past or future, and focus on the dynasty currently being discussed. Other powers cannot see them.