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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.The output of new energy vehicles takes the lead to seize the new highland of intelligent competition. BYD, GAC Ai 'an and Xpeng Motors, these new energy vehicle brands have helped Guangdong-Hong Kong-Macao Greater Bay Area become the highland of new energy vehicle industry in China. The data shows that one out of every four new energy vehicles in China is "made in Guangdong". At present, a number of leading enterprises in Guangdong-Hong Kong-Macao Greater Bay Area have emerged, such as Shenzhen Yinwang, Zhuoyu, Wen Yuan Zhixing, Xiaoma Zhixing, Desai Xiwei and Sagitar Juchuang, which have formed a perfect intelligent networked automobile industry chain. According to the insiders, intelligentization provides power for the "second half" of the development of new energy automobile industry, and Guangdong-Hong Kong-Macao Greater Bay Area is seizing the new highland of intelligent networked automobile industry.The pumped storage capacity of State Grid in operation exceeds 40 million kilowatts. Today (12th), with the full commissioning of Zhen 'an Pumped Storage Power Station in Shaanxi Province, the installed capacity of pumped storage in operation of State Grid Corporation exceeded 40 million kilowatts, accounting for about 70% of the pumped storage power stations in operation in China. After 15 days of trial operation, Unit 4 of Shaanxi Zhen 'an Pumped Storage Power Station was successfully put into operation today, marking the full commissioning of the pumped storage power station.

CICC: Maintain the target price of Wanwuyun's "outperforming industry" rating of HK$ 30.58. CICC released a research report saying that it will maintain Wanwuyun (02602.HK)' s "outperforming industry" rating and be optimistic about the company's long-term multi-track and all-round comprehensive competitive strength based on residential, commercial, technological and urban scenes, with a target price of HK$ 30.58. Keep the profit forecast unchanged. The company's shares are currently trading at 9.6 times the 2024 P/E ratio based on the core net profit, and the annual dividend yield is 8.0% according to the dividend payout ratio of 55% in the second half of the year.Dozens of people were killed in attacks in Gaza. According to several Palestinian media reports, on the 11th local time, Israeli troops continued to attack many places in Gaza, causing dozens of deaths. Among them, near Kamal Adouan Hospital in the northern part of Gaza, Israeli troops attacked again that day, killing at least 30 people, most of whom were women and children. In addition, on the same day, the Israeli army burned dozens of houses in the Gebali refugee camp in the northern Gaza Strip, and many places such as Deir Balah in the Gaza Strip, Nusailit refugee camp and Khan Younis in the southern Gaza Strip were also attacked by the Israeli army, causing casualties. (CCTV News)Morgan Stanley upgraded the rating of Shandong Gold H shares to over-allocation, with a target price of HK$ 22.20.

In response to Trump's tariff threat, the Canadian Prime Minister held another meeting with provincial governors. On December 11, local time, Canadian Prime Minister Trudeau held another meeting with provincial governors to discuss the tariff threat of US President-elect Trump. This is the second time that Trudeau has held a meeting with provincial governors since Trump threatened to impose a high tariff of 25% on Canada last month. It is also the first time that Trudeau has met with governors after having dinner with Trump at Haihu Manor. Trudeau said that if Trump really continues to impose a 25% tariff on all Canadian goods shipped to the United States, Canada is prepared to make some kind of response. The outside world believes that this statement means that Canada will impose retaliatory tariffs on some American goods. (CCTV News)During the year, A-share companies threw out nearly 1,000 single and medium-term cash dividend plans. According to Wind statistics, as of December 11th, 940 listed companies have thrown out 994 single and medium-term cash dividend plans this year, with the number of them increasing by 269.41% year-on-year. The total amount of dividends involved was 667.519 billion yuan, a year-on-year increase of 166.24%. Among them, 791 orders have been implemented, and dividends have reached 360.768 billion yuan; 203 single pending implementation, the total amount of dividends to be paid is 306.751 billion yuan. (Securities Daily)Trump's nominated director of NASA said that his future mission of cooperating with SpaceX would be put on hold. On December 11th, local time, jared Isakman, the director of NASA nominated by US President-elect Trump, said that his future private astronaut mission planned to cooperate with SpaceX of elon musk might be put on hold. Isaac Mann said that the future of the Polaris Project is still a "question mark".