On October 22nd, today, the North Composite 50 index fell rapidly after the opening, falling more than 8% at one point, 9 times the big bull stock Ai Rong Software once fell more than 20%, Yunchuang Data, Kunbo Seiko, Kaihua Materials, Qingmoment Technology, Haiyu Pharmaceutical and other more than 70 stocks on the Beijing Stock Exchange once fell more than 10%. But soon, there was money coming in, and the North Composite 50 was able to turn red. However, the long momentum seemed to decay, the i...