The stinging iron tree wakes up a giant dragon that changes history. He was originally an ordinary young man in a modern city. He traveled to the Song Dynasty by accident. Modern knowledge, develop industry, make the country rich and material enough to develop wisdom of the people; strengthen the military, resist Liao and attack Jin to destroy Xixia. Looking at the world, the oriental dragon that came from the future and lay down overlooking it, is famous all over the world...