According to the inquiry of Jiangsu Youth Science and Technology Education Association, the second prize of the 30th Jiangsu Youth Science and Technology Model Competition contains a lot of gold. Jiangsu Youth Science and Technology Model Competition is a white list science and technology competition in Jiangsu Province, which has been held in Jiangsu Province for 30 years. It is a science and technology education and popular science competition integrating knowledge accumulation, skill training and inquiry learning, with high gold content.