On the fourth day of June in the ninth year of Wude in the Tang Dynasty, King Qin controlled the Shence Army to occupy the Xuanwu Gate and killed the King of Chaos. Prince Yin escaped from death and came to the outskirts to fight with King Qin's army at Baota Village and Xiangji Temple. After all, Prince Yin did not have many soldiers. After the two battles, Prince Yin disappeared. King Qin succeeded to the throne and ordered a search for Prince Yin. Looking for traces of Prince Yin, the world is a little unstable at this time. The old rebel armies of the late Sui Dynasty are causing chaos in various places, all under the banner of Prince Yin. The Tubo, Uighur, Turks, Goryeo, and Ryukyu all claim that Prince Yin is occupied and are at war with the Tang Dynasty. Can the precarious Tang Dynasty continue the country, or will the lingering Prince Yin be restored to power?
Li Shimin, Emperor Taizong of the Tang Dynasty, struggled all his life. Finally, at the last moment when he closed his eyes, he learned the news about Prince Yin, and things became complicated and confusing.
Intention: Through secret activities, Prince Yin started an open and covert battle with Li Shimin to compete for Zuo of the Tang Dynasty.