The pace of history has never stopped, but countless possibilities have developed as a result of countless accidents. Scientists call this a parallel universe. Li Shimin, a top student in the archeology department of a well-known university in China, whose father was a loyal fan of Emperor Taizong of the Tang Dynasty, gave him the same name as Emperor Taizong of the Tang Dynasty. During an archaeological process, while exploring the ancient tomb mechanism, he traveled back to the body of Li Shimin, who was originally Emperor Taizong of the Tang Dynasty. He discovered that the time and space he traveled to was not the Sui and Tang Dynasties in history. The history here has changed since the end of the Warring States Period. Yingzheng did not unify the six kingdoms, but the era that should have been the end of the Sui Dynasty and the beginning of the Tang Dynasty was the time when the Three Kingdoms stood in power. Let's see if Li Shimin can unify China and build the Tang Dynasty.