Students are now in an amusement park, now responsible for playground equipment, also is the playground equipment parts. The work is not so easy, because it is related to human life, safety is the most important playground equipment. But also very admire his university, when school of civil engineering, now really is put to use. He said playground equipment still have a lot to learn, learned in school that is far from enough, because there are a lot of new facilities, need to continue to learn new knowledge, but also a challenge. Like I think playground equipment is certainly a very difficult job, I certainly do not come.