[Afternoon Commentary: The GEM index fell more than 4% in half a day, and more than 4,800 stocks in the market fell] On September 28, the market opened lower in early trading, and the GEM index fell more than 4% in half a day. The half-day turnover of the Shanghai and Shenzhen stock markets was 1.16 trillion, 93.4 billion higher than the previous trading day. More than 4,800 stocks across the market fell. On the market, the complete automobile sector moved up, with JAC 4-day board and Zotye Auto hitting the daily limit; glass substrate Jinchen shares hit 3 consecutive boards and Ledman Optoelectronics rose more than 10%; network security Yongxin Zhicheng hit the daily limit 20cm and Sino-Singapore hit the daily limit; real estate Shenzhen Property A and Shenzhen Huafa A both hit the limit. On the downside, highly popular stocks plunged in large areas, with Daya Shengxiang, Inner Mongolia Xinhua, Jinjian Rice Industry, Aohong Electronics, Taimus, Nanhua Biotech, and Tianwei Video falling by the limit. The concept of precious metals weakened, Shandong Gold fell to the limit, Xiaocheng Technology, Hunan Silver, etc. fell one after another. As of the close, the Shanghai Stock Exchange Index fell 1.74%, the Shenzhen Component Index fell 3.37%, and the ChiNext Index fell 4.32%.