Travel Through the Xuanwu Gate and Confront Li Shimin

[According to changes in the historical background, almost no system + scheming + group portraits + war + despair, the headwind game opens, the victory takes half a day, and the headwind comes back] [Top liberal arts students use all historical knowledge (including Sui and Tang history, modern history), and use the wisdom of major historical figures to fight against top carbon-based organisms - Li Shimin] The history graduate student traveled directly into the Xuanwu Gate. Li Shimin's troops were right in front of him. In one year, he either ascended the throne or died. There is no scientific knowledge that can be used, and there is no way to make artillery, glass, and soap. The only thing that can be used is the accumulated knowledge of history, and the system that throws people in and escapes to death. Facing Li Shimin and his team: Changsun Wuji, Fang Xuanling, Du Ruhui and others, facing the emperor Li Yuan, and facing the prince, how should Li Yuanji, who has no background and no good generals, turn the tide? Can he really change history, or will he become Li Shimin's prisoner? (Adapted based on the historical background, some historical background will be changed for the sake of the article. It is not a very serious imagination novel. If someone cares about the historical background, it can be avoided)