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The three major stock indexes all fell more than 1%, the Shanghai Composite Index fell 1%, the Shenzhen Composite Index fell 1.28%, the Growth Enterprise Market Index fell 1.49%, and more than 4,100 stocks in the whole market fell.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.Shunkong developed 50 million yuan to set up an industrial investment company. According to the enterprise survey APP, recently, Guangdong Shunkong Qingxun Industrial Investment Co., Ltd. was established with Liang Weifeng as the legal representative and a registered capital of 50 million yuan. Its business scope includes: sales of eco-environmental materials; Sales of building materials; Sales of new membrane materials; Sales of synthetic materials, etc. Enterprise investigation shows that the company is wholly owned by Shunkong Development.

Kangxinuo said on the interactive platform that the company is promoting the research and development of a variety of innovative vaccines, submitting applications for related matters in accordance with the guiding principles of CDE, and actively communicating and reporting.The T-shaped overpass with the longest and heaviest single span in China successfully turned and crossed Panxi Railway. According to The Paper, on the afternoon of December 11th, after 82 minutes of continuous construction, the T-shaped overpass with the longest and heaviest single span in China turned 52 degrees clockwise from Panxi Railway Vehicle Turning Station to Yangweishao Station under the jurisdiction of Kunming Bureau of China Railway, realizing a "gorgeous turn" and successfully completed the turn across Panxi Railway.Most gold stocks in Hong Kong stocks fell, and Lingbao Gold fell by nearly 5%. As of press time, Lingbao Gold (03330.HK) fell by 4.75%, Zijin Mining (02899.HK) fell by 2.82% and Zhaojin Mining (01818.HK) fell by 2.75%.

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.The turnover of Shanghai and Shenzhen stock markets exceeded 500 billion.Foreign media: Trump "strongly opposes" Ukraine's use of American-made missiles to attack Russia's hinterland, and at the same time says that he will not give up Ukraine. According to Reuters's report, US President-elect Trump criticized Ukraine's use of American-made missiles to attack targets in Russia on the 12th local time, arguing that this has aggravated the escalation of the war between Russia and Ukraine. However, he also mentioned that he would not give up Ukraine. When talking about the Russian-Ukrainian conflict, Trump said in an interview, "What happened is crazy. This is crazy. I strongly object to launching missiles hundreds of miles into Russia. Why are we doing this? This will only escalate this war and make the situation worse. " According to the report, Trump hopes to end this "war" that lasted for nearly three years as soon as possible, but he is more cautious about revealing specific details. When asked if Kiev would cut its military and humanitarian aid to Ukraine if it did not agree to the peace agreement, Trump responded, "I think I have a very good plan to help Ukraine, but when I started to disclose this plan, it would almost become a worthless plan." In addition, when asked if he would give up Ukraine, Trump replied, "I hope to reach an agreement, and the only way to reach an agreement is not to give up." (World Wide Web)