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Siemens Medical AG: Siemens Medical acquired Advanced Accelerator Applied Molecular Imaging Company.U.S. Department of Agriculture (USDA): It is estimated that the ending inventory of corn in the United States is 1.738 billion bushels, and analysts expect 1.90192 billion bushels. USDA had previously expected 1.938 billion bushels.United Nations report: Three quarters of the earth's land is gradually dry due to climate change. The 16th Conference of the Parties to the United Nations Convention to Combat Desertification (COP 16) was held in Riyadh, Saudi Arabia, from December 2 to 13. On the 9th, the United Nations released a report during the meeting, saying that about three-quarters of the world's land has gradually become dry due to climate change. The report found that in the 30 years before 2020, about 77.6% of the world's land became drier than before. At present, except Antarctica, the dry land area accounts for about 40% of the global land area. Between 1990 and 2020 alone, the global dry land area increased by 4.3 million square kilometers.

Yihang Smart rose more than 1% before the market. Shenzhen built the world's leading low-altitude economic industrial ecology, and EH.US rose 1.42% to US$ 15.71 before the market. In the news, the key low-altitude new infrastructure project in Nanshan District, Shenzhen, Guangdong Province was officially launched recently. The project will deploy low-altitude new infrastructure to build a world-leading low-altitude economic and industrial ecology. According to industry insiders, the development prospect of low-altitude economy is broad, and the construction of low-altitude infrastructure will be accelerated. At present, China's low-altitude smart network and low-altitude airspace management need to be improved, related infrastructure and technology need to be broken, and business models still need to be explored.Callas, EU High Representative for Foreign Affairs and Security Policy: We must avoid repeating the mistakes of Iraq, Libya and Afghanistan. Concerns about the rise of sectarian violence and extremism in Syria are justified. The regime transition will bring great challenges to Syria and the region.Bitcoin fell below $95,000/piece, down 2.50% in the day.

CEO of Goldman Sachs: The bank expects that the regulatory environment will be more favorable.Tangshan Port: Chen Lixin was elected as the chairman of the board. Tangshan Port (601000) announced on the evening of December 11th that the company elected Chen Lixin as the chairman of the eighth board of directors, as well as a member and chairman of the strategy committee and a member of the nomination committee of the eighth board of directors. The term of office shall be from the date of deliberation and approval of this board of directors to the date of expiration of the term of office of the eighth board of directors.The European STOXX 600 index initially closed down 0.48% at 518.73 points. The euro zone STOXX 50 index initially closed down 0.67% to 4951.85 points. The FTSE Pan-European Excellent 300 Index initially closed down 0.50% at 2059.80.