Except for the male protagonist's mother, everyone else has grown up together. The female protagonist led the troops to repel the Beirong regardless of her father's opposition. On the way back to Beijing, I met the male protagonist and the second male protagonist who had returned from studying art. After going through some twists and turns, the heroine and the hero got together, and then the Beirong attacked. The hero led the troops to repel the Beirong behind the heroine's back, and died in the battle. When the heroine found out, she broke down and cried, closed the door of the princess's mansion, and ignored the court affairs.
Qin Youchuan: Aning, I broke my promise.
Nan Sangning: Ah Chuan, you said you wouldn't lie to me. Everything you promised me doesn't count.
Purpose: I, Nan Sanning, am not anyone's accessory