We Agreed to Become Gods of War Together. How Come You Know How to Use Magic?

Over the past two hundred years, the situation has changed. The Nianling method has disappeared out of thin air, martial arts has flourished, and the beasts from outside the territory have suddenly erupted after their silence. All this will be solved by Chen Chen. It's just that………… Principal: "Do you really want to practice martial arts?" Chen Chen: "Naturally." Principal: "But the journey to martial arts is extremely difficult!" Chen Chen: "Don't worry, I can persist." Principal: "Not only that, martial arts is also full of dangers. If you are not careful, you will die." Chen Chen: "It doesn't matter, I can persist." Principal: "Hey, I have to say that your talent is too poor..." Chen Chen: "I will reimburse all the training resources." Principal: "Tsk, then this is..." Chen Chen: "I will donate another library." Principal: "Hey, little friend Chen Chen, which class do you want to join?"