Datang: a Naughty Kid Who Encouraged Li Yuan to Rebel at the Beginning

He traveled through the late Sui Dynasty and became a child, met Li Yuan, the founding emperor of the Tang Dynasty, and encouraged Li Yuan to rebel based on his shallow historical knowledge, and became the adopted son of the founding emperor of the Tang Dynasty! He thought he had embraced the biggest influence of this era, but he became the biggest behind-the-scenes figure behind Li Yuan's change of dynasty and the establishment of the Tang Dynasty. I originally wanted to be an idle prince, but I stepped into the center of the storm step by step. In desperation, I had no choice but to choose a path that tests human nature even more. Where in this world is there true love?