I just traveled to the Frontier Army of the Tang Dynasty, and the first battle was with Talas. Before he could figure out the situation, he was pushed into the battlefield. When the first arrow came, I heard someone laughing. That's not the sound a human should have. Someone was charging into the battle formation, breaking through the formation like cutting wheat. Wherever the blade passed, the formation seemed to be torn apart. Someone was cut down, then stood up and continued to cut people. There are also some things, mixed among the military formations, that seem not to belong to this world at all. I started to wonder if I was crazy. But I soon realized that maybe it wasn't me who was crazy. I know history. The Tang army will be defeated in this battle, and then the Anshi Rebellion will break out, and the Tang Dynasty will collapse all the way. But the problem now is - the world I am familiar with seems to be starting to go wrong.