Border Soldier: Escort the Subjugated Princess at the Beginning

Shen Yan was transformed into the lowest soldier at the border, escorting the family members of the subjugated country on a snowy night. The general abandoned the army and fled. The lieutenant wanted to kill the princess to reduce the burden. Shen Yan grabbed the sword and killed him. He led thirty remaining soldiers to guard the abandoned fort, but found that the subjugated princess had a secret border map hidden in her body that could overturn half of the court.