Great Tang: I Was About to Flee, When the Sky Screen Revealed I Was an Emperor for the Ages

I transmigrated to the Tang dynasty and became Li Chengqian, the crown prince who, in the history books, was driven toward madness by Li Shimin's “competitive parenting” and ultimately rebelled. My father is a “great educator,” and even my younger brothers and sisters are eyeing the throne. I'm the crown prince, yet I work harder and live worse than the son of an ordinary merchant. Li Chengqian gets it: being crown prince is a dog's job! Just as Li Chengqian decided to abandon the crown prince's position and enjoy life, a sky screen descended from above: 【Hello, everyone! Next, let's take a look at the Milky Way's chief, a nonhuman being from the seventh century, the greatest of all time-travelers, the pioneer of technological ascension, the first emperor of all ages, my arrogant yet fascinating ancestor, the Human Emperor, Li Chengqian!】