At the Beginning of the Expedition, the General Said He Wanted to Surrender?

Imaginary resignation + single female protagonist + time travel + farming + intrigue Qi, Chu, Qin, Yan, Zhao, Han, Shang. The human race is divided into seven countries, but they have signed alliance agreements with each other. Those who violate the alliance will be punished by the seven countries. Just because there are undead, elves and other alien races outside. Fortunately, Ling Jiu came through time and brought the military technology from his previous life to synthesize new fantasy weapons.