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Scientists observed semi-Dirac fermion for the first time, and scientists from Pennsylvania State University and Columbia University joined hands to observe a special kind of quasi-particle-semi-Dirac fermion for the first time. Such quasi-particles have mass when moving in one direction, but lose mass when moving in the other direction. The researchers said that in-depth research on these quasi-particles is expected to promote the development of next-generation batteries, sensors and other technologies. Related papers were published in the new issue of Physical Review X.Make professional investment easier, explore the application of AI big model in the financial field, and actively embrace big model technology in the financial field. Since the beginning of this year, both financial data terminals and financial technology leaders have actively launched applications based on large models. Related applications are concentrated in high-frequency fields such as man-machine dialogue, intelligent investment and research, and intelligent investment and care, which makes the function of artificial intelligence in assisting investment gradually perfect. Many interviewees said that with the help of artificial intelligence technology, ordinary investors can realize professional-level analysis and decision-making process. This means that the "inclusive" era of professional investment will accelerate. (SSE)NASDAQ China Golden Dragon Index closed down 0.74%, NASDAQ China Golden Dragon Index closed down 0.74%, most popular Chinese stocks fell, Tencent Music fell more than 5%, JD.COM fell more than 3%, Xpeng Motors fell more than 2%, and Bali, Weilai and Pinduoduo fell more than 1%. In terms of gains, Tiger Securities rose more than 3%, while Youdao and Gaotu rose more than 1%.

Microsoft expects to accrue about $800 million in impairment charges related to GM Cruise in the second fiscal quarter, and Microsoft expects to accrue about $800 million in impairment charges in the second fiscal quarter, which is related to the company's minority equity investment in GM Cruise. This will have a negative impact of about 9 cents on Microsoft's earnings per share in the second quarter.Microsoft expects to accrue about $800 million in impairment charges related to GM Cruise in the second fiscal quarter, and Microsoft expects to accrue about $800 million in impairment charges in the second fiscal quarter, which is related to the company's minority equity investment in GM Cruise. This will have a negative impact of about 9 cents on Microsoft's earnings per share in the second quarter.Make professional investment easier, explore the application of AI big model in the financial field, and actively embrace big model technology in the financial field. Since the beginning of this year, both financial data terminals and financial technology leaders have actively launched applications based on large models. Related applications are concentrated in high-frequency fields such as man-machine dialogue, intelligent investment and research, and intelligent investment and care, which makes the function of artificial intelligence in assisting investment gradually perfect. Many interviewees said that with the help of artificial intelligence technology, ordinary investors can realize professional-level analysis and decision-making process. This means that the "inclusive" era of professional investment will accelerate. (SSE)

Seven people were killed in the attack on Rafah, a city in the southern Gaza. On the 12th local time, it was learned from the Palestinian side that Israeli troops bombed Rafah, a city in the southern Gaza, killing seven people and injuring many others. According to medical staff in Rafah, seven dead people were attacked while protecting a rescue truck that arrived in the city. (CCTV News)Cai Weidong was appointed as the deputy secretary of the Party Committee of Shentong Metro Group. According to the news of Shentong Metro Group, on the afternoon of December 11th, Shentong Metro Group held a leadership adjustment announcement meeting. At the meeting, the Organization Department of the Municipal Party Committee announced that Cai Weidong was appointed as the deputy secretary of the Party Committee of Shanghai Shentong Metro Group Co., Ltd., and Ge Shiping was removed from the post of deputy secretary of the Party Committee of Shanghai Shentong Metro Group Co., Ltd.CICC: The CPI of the United States rose as scheduled in November, but it did not hinder the interest rate cut. CICC released a research report saying that the CPI and core CPI of the United States both rose to 0.31% in November, which was basically in line with the market and its expectations. For the post-election policies, if the immigration and tariff policies are too radical, it will bring pressure to inflation at the end of next year, which will have an impact on the market and even the mid-term elections. Therefore, before the mid-term elections, due to the "realistic constraints" of inflation, the inflation policy will be faster, but the scope may be limited, while the growth policy will be faster, and then the overall assets will still be positive. According to the difference between the natural interest rate and the real interest rate, CICC estimates that after the interest rate cut in December, there may still be two or three interest rate cuts in 2025, with the end point of interest rate cut at 3.5-3.75% and the center corresponding to long-term US debt at 3.8-4%.