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The three major stock indexes opened lower and went lower. The Shenzhen Stock Exchange Index and the Growth Enterprise Market Index all fell more than 1%, and the Shanghai Composite Index fell 0.88%.The growth enterprise market index fell to 1%, the Shanghai Composite Index fell by 0.65% and the Shenzhen Composite Index fell by 0.93%. Securities, real estate and food consumption were among the top losers, with nearly 4,300 stocks falling in Shanghai, Shenzhen and Beijing.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 scale of A500-related funds exceeded 240 billion yuan, and the scale of CSI A500ETF leader (563,800) jumped to the first place in Shanghai. On December 12, the total scale of funds tracking CSI A500 index reached 242.1 billion yuan, which was the fastest index in the history of A-share. In addition, the CSI A500 Index also contributed about one third of the increase in scale index funds since September. Among them, CSI A500ETF leader (563800) has attracted the most gold since its listing on November 18th, with a net inflow of 14.2 billion yuan, and its latest scale has exceeded 16.5 billion yuan, ranking first in Shanghai.Yin Xiyue continued to exercise the presidential power to submit the consent of the appointment of the chief justice to the National Assembly. According to the information system of the Korean National Assembly's motion, South Korean President Yin Xiyue submitted the consent of the appointment of the chief justice to the National Assembly on the 12 th, and said that "with the end of the term of office of the chief justice, in order to appoint a successor judge, the consent of the National Assembly is requested." Yin Xiyue delivered a speech to the people on the 12th, refused to end his term of office ahead of schedule, and successively approved 42 bills and enforcement orders, and also submitted a consent case for the appointment of the chief justice to continue to exercise the presidential power. According to the Korean Constitution, the Chief Justice shall be submitted by the President of the Grand Court of Korea (the High Court) and appointed by the President with the consent of the National Assembly. (CCTV News)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.Yin Xiyue continued to exercise the presidential power to submit the consent of the appointment of the chief justice to the National Assembly. According to the information system of the Korean National Assembly's motion, South Korean President Yin Xiyue submitted the consent of the appointment of the chief justice to the National Assembly on the 12 th, and said that "with the end of the term of office of the chief justice, in order to appoint a successor judge, the consent of the National Assembly is requested." Yin Xiyue delivered a speech to the people on the 12th, refused to end his term of office ahead of schedule, and successively approved 42 bills and enforcement orders, and also submitted a consent case for the appointment of the chief justice to continue to exercise the presidential power. According to the Korean Constitution, the Chief Justice shall be submitted by the President of the Grand Court of Korea (the High Court) and appointed by the President with the consent of the National Assembly. (CCTV News)The 28th meeting of the China-ROK Joint Economic and Trade Commission was held in Seoul, South Korea. On the 12th, Vice Minister of Commerce Li Fei co-chaired the 28th meeting of the China-ROK Joint Economic and Trade Commission with Vice Minister of Foreign Affairs Jiang Renxian in Seoul, South Korea. The two sides exchanged views on deepening China-ROK industrial chain supply chain, trade and investment, regional and multilateral cooperation, pragmatically promoted related matters, and reached broad consensus.