Join the Evil-Suppressing Bureau Through the Binding System

I am Xie Xiu, a serious college student. Just because I got lucky when I went to buy food for my brothers during self-study the next night, and then I traveled through time. Traveling through the standard starting orphan binding system, he grew up in an orphanage. The system told me that this world is different from the world in my previous life. This world is a world that has recovered some spiritual energy, and there are demons. As long as you kill the demon yourself, you can completely activate the system. From then on, he will reach the pinnacle of his life, and even be able to have an iron rice bowl and have a system.