Traveling Through Xianxia, ​​The System Says That Blacksmithing Can Lead to Promotion

As a young man in the 21st century, Cao Yu died suddenly due to overtime work and traveled to a world of immortals. When others realize the sense of Qi and escape from the level of mortals. Cao Yu found that he could make himself stronger and stronger through the system just by hitting the red-hot iron with a hammer. But it wasn't until one day that he discovered, damn! Why does the system have an upper limit? Depend on! Is this system deliberately trying to kill me? ! "Perceive the sense of energy? What is that? How did I rise to the state? I just did some tasks and the state rose!" How should Cao Yu face the intrigues and hidden secrets in various realms of the world? Let's see Cao Yu stir up the storm!