黄金股，集体跌停

Group 1 - The precious metals sector opened lower, with companies like Zhongjin Gold, Silver Nonferrous, and others hitting the daily limit down [1] - The precious metals index dropped by 8.22%, with 13 companies declining and only one company rising [2] - In the past week, the precious metals sector saw a significant increase of 25.40%, with a monthly increase of 86.46%, a quarterly increase of 110.70%, and an annual increase of 255.02% [2] Group 2 - Xiaocheng Technology experienced a sharp decline of over 19%, with a latest price of 68.78 and a market capitalization of 16.071 billion [2] - Sichuan Gold's stock price fell by 10% to 66.18, with a market capitalization of 19.09 billion [2] - Shandong Gold's stock decreased by 8.68% to 55.35, with a market capitalization of 200.059 billion [2]