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The central bank conducted a 7-day reverse repurchase operation of 78.6 billion yuan today, and the winning bid rate was 1.50%, which was the same as before. As 41.3 billion yuan of 7-day reverse repurchase expired today, the net investment on that day was 37.3 billion yuan.IBM's new optical technology can greatly speed up the training of AI models. IBM announced the development of a new optical technology, which can train AI models at the speed of light and save energy greatly. The company said that by applying this breakthrough to the data center, the energy saved by training an AI model is equivalent to the energy consumption of 5,000 American families in one year.The Hang Seng Science and Technology Index rose to 1%, and the Hang Seng Index is now up 0.70%.

Most gold stocks in Hong Kong stocks strengthened, and Zhaojin Mining rose by over 5%. As of press time, Zhaojin Mining (01818.HK) rose by 5.47%, Lingbao Gold (03330.HK) rose by 5.09% and Shandong Gold (01787.HK) rose by 2.26%.The cumulative number of cholera cases in Yemen is close to 220,000, and vaccination has been started in many places. Recently, the cholera epidemic has spread in Yemen. According to the statistics of the health department controlled by the Yemeni government, the cumulative number of cholera cases registered this year is close to 220,000. In response to the cholera epidemic, the Yemeni government, in cooperation with the World Health Organization and UNICEF, launched vaccination campaigns against cholera in many places.Yongtai energy ranked first in the exposure of leveraged capital stocks. On the last trading day (December 10th), a total of 2,076 stocks were bought by financing, and 28 stocks had a net purchase amount of more than 100 million yuan. Oriental Fortune ranked first in the net purchase of financing, with a net purchase of 388 million yuan; The top net purchases of financing were Zhongji Xuchuang, Iflytek and Wanxing Technology, with net purchases of 316 million yuan, 297 million yuan and 265 million yuan respectively. Sellers, Luxshare and Gree Electric were among the top sellers, with the amounts of 369 million yuan, 207 million yuan and 181 million yuan respectively.

The concept of reducer went down in early trading, and Shandong Mining Machine and Shanzi Hi-Tech fell, while Shandong Mining Machine and Shanzi Hi-Tech fell, and Qinghai Huading, Landay Technology, Nifa Seiki and Wuzhou New Year followed suit.The Huangmaohai Cross-sea Passage was opened to traffic today. At 15: 00 on December 11th, Guangdong-Hong Kong-Macao Greater Bay Area's key traffic project, the Huangmaohai Cross-sea Passage, will be put into trial operation, adding another "key level" to Guangdong-Hong Kong-Macao Greater Bay Area's cross-river traffic network. After opening to traffic, the land transit time from Zhuhai to Jiangmen will be shortened from more than one hour to about 30 minutes.The retail sector moved up for 8 days and 5 boards of Zhongbai Group, while the retail sector moved up for 8 days and 5 boards of Zhongbai Group, with the daily limit of Youa shares, and Dashang shares, wenfeng shares, Xujiahui and Jiajiayue rose rapidly.