Chinanews Client, August 24 (Xie Yiguan) On the 4th, the first day of the opening of the GEM registration system, the market is now in shock. The GEM once turned green in early trading and then rebounded strongly. As of the midday close, the Shanghai Composite Index rose 0.18% to 3,386.86 points; the Shenzhen Component Index rose 1.39% to 13,665.39 points; the ChiNext Index rose 2.32% to 2,693.56 points. On the disk, the components, construction machinery, agriculture, forestry, animal husbandry and fishery, electrical appliances, media and entertainment sectors saw the highest gains; in the conceptual sector, consumer electronics rose more than 5% to lead the market. The first batch of 18 new stocks under the GEM registration system all rose, and 10 new stocks rose more than 100%. Among them, N card times billion rose the most with 521.02%, followed by N Kangtai, which rose 468.90%. The smallest increase was N Fengshang, which rose 44.91%.