Introduction to Iron Fong: Iron Fong, also called Iron Machine or Iron Twist, is located about 200 meters west of Yueyang Tower. It is the commanding platform of Soochow general Lu Su. It was moved up from the beach under the platform by the staff of the scenic spot in May 1980. It is 2.6 meters long, 0.34 meters thick, with two ends in the shape of a swallow tail, and weighs about 7,000 kilograms. There have always been different opinions on the time and role of the casting of iron shackles. The only thing that can be determined is that the working people of ancient my country made extraordinary achievements in iron tools and smelting technology.