A Gathering of Tang Dynasties

Qiu Bai traveled through the early Tang Dynasty, climbed up to the King of Qin and became his subordinate. From then on, you will be everywhere. You planned the Xuanwumen incident, and you also did the deposed prince. You defeated Goguryeo and defeated the Turks. What, history has deviated from the track, then create history and compete with the Food Empire and the Byzantine Empire...