System: Scientific Training Manual

An accident brought Lin Xiuyuan to another world. He fought with pythons, partnered with cat monsters, watched the "River God" eat people, and even saw the unstoppable general roaring unwillingly in the face of the rain of sword light on the battlefield between the two countries. Just when Lin Xiuyuan was about to accept everything, he imagined that he was going to rely on the system to hold the imperial city, kill everyone, and suppress an era. The system told him to believe in science!