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The change in the concept of ice and snow industry has boosted the daily limit of iceberg cold and snowman shares, while the change in the concept of ice and snow industry has boosted the daily limit of iceberg cold and snow, snowman shares and Rhine Sports, and Sanfu Outdoor, Dalian Shengya, Changbai Mountain and Yuanlongyatu have followed suit.The change in the concept of ice and snow industry has boosted the daily limit of iceberg cold and snowman shares, while the change in the concept of ice and snow industry has boosted the daily limit of iceberg cold and snow, snowman shares and Rhine Sports, and Sanfu Outdoor, Dalian Shengya, Changbai Mountain and Yuanlongyatu have followed suit.Real estate stocks fluctuated lower, with Gorgeous Family, Qixia Construction, Everbright Jiabao and Tiandiyuan falling more than 5%, while urban construction development and Chongqing development followed suit.

Shanxi Securities: Sora officially launched the AI video generation tool, which continued to iterate. Shanxi Securities Research Report pointed out that 1) On December 10th, OpenAI officially launched Sora. Compared with the version released by OpenAI in February, the new Sora launched this time added Storyboard, Remix, Re-cut and other functions, which greatly improved the video re-creation ability and optimized the video generation speed and generation method. 2) Since the beginning of this year, domestic enterprises have begun to accelerate the research and development and iteration of AI video generation products, and the product capabilities have been continuously improved and the application scenarios have been continuously broadened. Sora was officially launched, and the video creation ability was significantly improved, and it began to change from a creative tool to a productivity tool. With the continuous iteration of AI video generation tools represented by Sora, its penetration into various application scenarios is expected to accelerate in the future. On the one hand, the application layer suggests focusing on creative, design, education and other multi-modal fields, especially video generation. On the other hand, the demand for computing power in video generation model is significantly higher than that in text, focusing on AI computing power related targets.List of stock repurchases of Hong Kong stocks: 43 stocks were repurchased by the company. On December 12, a total of 43 Hong Kong stocks were repurchased by the company, and the repurchase amount of 8 stocks exceeded HK$ 10 million. Among them, Tencent Holdings, AIA and Samsonite have the largest repurchase amounts, with the company repurchasing HK$ 704 million, HK$ 61,711,300 and HK$ 34,247,500 respectively. As of December 12, 274 Hong Kong stocks have been repurchased by the company this year, and the cumulative repurchase amount of 62 stocks during the year exceeded HK$ 100 million. Among them, Tencent Holdings, HSBC Holdings and AIA have the largest cumulative repurchase amount during the year, with the company repurchasing HK$ 104.602 billion, HK$ 40.706 billion and HK$ 31.059 billion respectively.Hebai Group: With the help of policy dividends, it will further stimulate new consumer demand and help the company's sales promotion. Hebai Group (000417) said on the interactive platform on December 13th that the company's top 100 electrical appliances actively grasped the new round of "trade-in" policy opportunity, adhered to "policy+activity" to stimulate new consumption potential, and quickly launched more than 33,000 subsidized goods in 8 categories of household appliances and 24 categories of smart homes. Since the implementation of the national subsidy policy in 2024, there have been more than 100,000 rejuvenation machines in stores in Anhui Province, with sales exceeding 400 million yuan, and the sales of household appliances in stores increased by 121% year-on-year. In the next step, the company will seize the time window, continue to integrate resources, closely focus on the national subsidy policy for household appliances in Anhui Province and Hefei consumer vouchers, and further stimulate new consumer demand with the help of policy dividends to help the company's sales increase.

Real estate stocks of Hong Kong stocks weakened, and Sunac China fell more than 4%. As of press time, Sunac China (01918.HK) fell by 4.03%, Rongxin China (03301.HK) fell by 3.85%, and Longhu Group (00960.HK) fell by 2.43%.Guosheng Securities: AEC heavy-duty computing industry chain has entered the era of Lian Heng. Guosheng Securities Research Report pointed out that AEC(Active Electrical Cable) is an active cable interconnection scheme, which is mainly used in short-distance high-speed data transmission scenarios in data centers. 1)AEC is expected to become the first step for optical module manufacturers to penetrate downwards. Optical modules need to master photoelectric conversion and high-speed data communication, and DAC/AEC/AOC products have relatively mature technical requirements compared with single-mode/multimode optical module products with longer transmission distance. 2) Copper interconnection is widely used by large CSP not only in NVIDIA. NVIDIA used a large number of high-density copper interconnects in B series products, which made the industry re-recognize the reliability and price advantage of copper interconnects in short-distance scenes. 3) In the era of Lian Heng, domestic manufacturers still have obvious advantages. Chip manufacturers, represented by NVIDIA, have been hoping to conduct a comprehensive industry consolidation and provide customers with a complete set of solutions. What CSP manufacturers want more is the decoupling of the industrial chain, and every link such as GPU, copper connection, optical module and switch can find corresponding suppliers. The heavy volume of AEC and the rise of CSP manufacturer's independent scheme indicate that the computing power industry chain has entered the era of Lian Heng, and we are firmly optimistic about the domestic related computing power industry chain.The 30-year Treasury ETF rose sharply at the opening, hitting a record high. Both "Boshi SSE 30-year Treasury ETF" and "Pengyang China Bond -30-year Treasury ETF" rose by 0.65%.