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Hong Kong stock Jingtai Holdings plunged nearly 15%, and the company's 1.464 million restricted shares are expected to circulate freely from today.The net outflow of the main market exceeded 10 billion.The central bank's open market today launched a 7-day reverse repurchase operation of 205.1 billion yuan, and the operating interest rate was flat at 1.50%. Today, 190.9 billion yuan of 7-day reverse repurchase expired, and the net investment on that day was 14.2 billion yuan.

Chongda Technology: Five measures are taken to deal with the challenges and opportunities of industry development. Chongda Technology (002815) said in the online collective reception day of investors on December 12 that the company's measures to deal with the challenges and opportunities of industry development include: optimizing product structure, continuing to promote the optimization and upgrading of product structure, increasing R&D investment and market expansion in the field of high-end PCB boards, and accelerating the introduction of high-value customers and orders; Improve production efficiency and cost control; Accelerate the pace of capacity expansion, and promote the speed of capacity improvement of Dalian Plant, Zhuhai No.1 Plant and Zhuhai No.2 Plant in an orderly manner; According to market demand, adjust product price strategy in real time to improve profitability; Accelerate the construction of production base in Thailand, actively participate in international competition and cooperation, and enhance the company's visibility and influence in the global PCB market.Texas, the United States, launched an investigation into technology platforms for the protection of minors. Texas Attorney General Ken Paxton said on Thursday that the attorney general's office launched an investigation into more than a dozen technology platforms, covering practices on the privacy and safety of minors. Paxton added that the surveyed platforms include artificial intelligence chat robot startups such as Character.AI, Reddit, Instagram and Discord. Social media companies said that they will cooperate with officials to protect young users, and said that they have launched new tools aimed at protecting teenagers from surfing the Internet, including parental controls.Microsoft: The latest small language model PHI-4, which is specially used for complex reasoning, is introduced.

Klarna, a Swedish payment company, said that it stopped recruiting hundreds of employees because of AI during the year. Sebastian Siemiatkowski, CEO of Klarna, a Swedish payment company planning to go public in the US, said that the company stopped recruiting a year ago, mainly because it invested in artificial intelligence (AI), which can replace the work of hundreds of employees in the company. According to Siemiatkowski, the number of employees decreased by 22% to 3,500 within one year, mainly due to brain drain. He pointed out that at present, about 200 employees in the company use artificial intelligence for their core work, and will improve the efficiency of artificial intelligence by accelerating the salary growth of employees.Wanwu Lianghang upgraded its real estate management with wisdom and low carbon. On December 12, Wanwu Lianghang released a smart+low carbon solution for real estate operation, relying on AI wisdom brain-Wanwu Yunlingshi to help asset holders carry out asset management, enterprise services, energy management and property supervision more efficiently and transparently.Affected by martial law, the support rate of South Korean President Yin Xiyue fell to a record 11%.