My Refining System Can Hit Critically

Chu Heng traveled through the eight wastelands and obtained the refining system. Because the refining system is unstable, I just want to keep a low profile and just be a passerby. But the time he traveled through was first the descendant of Guigu, and then the demon emperor Jun awakened. The demon clan aggressively attacked the human race, and the world was in chaos. He, a little person who is not even a small soldier, can only use his advantage of accumulating personal attributes and refining powerful elixirs to reverse this big game.