Participate in the Jingnan Campaign at the Beginning

In the thirty-first year of Hongwu's reign, Zhu Yuanzhang passed away, and the emperor's grandson Zhu Yunwen hurriedly ascended the throne to implement a radical policy of reducing vassal status. Gu Chen, a lover of Ming history in the 21st century, traveled through time and became a clerk in Prince Yan's palace. With his historical knowledge, he predicted the tragic outcome of the Jingnan Campaign, and was determined to help Zhu Di seize the throne at the minimum cost.