On the Day When Everyone Was Executed, I Counted the Heads with a Smile

On the day when everyone was massacred, Shen Qingwu smiled and counted the hundredth head, then turned around and seized the enemy's territory. She is the only survivor of the Zhenbei Hou Mansion, but she sneaks into the army of her enemy Yan Wujiu in the name of a military advisor to try to get a chance to survive.