Traveling through troubled times: Princess disguises herself as a man and becomes a soldier to earn

Jiang Li survived hard for five years in the apocalypse. During the last zombie siege, she was torn to pieces by zombies in order to protect her comrades. She traveled through time and space and was reborn as a princess. Before she could be happy about the world without zombies, she had to face the chaotic world. In order to get information, she disguised herself as a man. Unexpectedly, she was captured as a soldier. She was unfamiliar with the place and came to the Mohist Army as a cook. At first, she just wanted to have enough food. Later, she learned that the food and grass were withheld by treacherous officials. The marshals and generals had to tighten their clothes and live a tight life. Only by going to the battlefield could they have enough food. So she... She often blew up the enemy's heads on the battlefield. Her cruel and fierce side frightened the enemy and she was named Jiang Yanwang...