After Time Travel, I Saved the World with Short Videos

First person: I, Li Ze, accidentally downloaded a magical app that can synchronize the video of all dynasties. Watching the ancient emperors' wonder and yearning for modern technology, culture, and systems, I know that history will change from now on. Third person: Li Ze downloaded a magical app, and the video can synchronize the past dynasties. The surprises, thinking, and reforms of the ancients make history interesting and full of challenges.