Start with the Sage's Book in Hand

[Traditional fantasy] [No system] [No rebirth] [Single female protagonist] When you are in the mountains, there is no place to return, and you can maintain peace and tranquility. Away from the dim lights and the sound of people, I stand on the battlefield to seek peace for my family. Even though the reincarnation of body and death cannot be sought, I still hold the sword and guard the light. We have been defending the city for more than 40 years, and countless people around us have died. If the people are at peace, someone must sacrifice. So many people have died, and today it is our turn. Listen up! I have the will to protect the city with my life, and the old man resumed his old armor. In a fierce battle, the enemy soldiers are determined to die, and kill a thousand enemy heroes. You can't retreat. What's behind you is a peaceful life and a clear life.