涉嫌严重违纪违法，李欣被查

Group 1 - The core point of the article is the investigation of Li Xin, former assistant general manager of China National Pharmaceutical Group, for serious violations of discipline and law [1][8]. - Li Xin was born in 1962, is a member of the Communist Party, holds a master's degree, and is a pharmacist [3]. - Li Xin has a long history in the pharmaceutical industry, having held various managerial positions in companies such as Beijing Yongzheng Pharmaceutical and Meikang Yongzheng before becoming assistant general manager at China National Pharmaceutical in December 2016 [5]. Group 2 - As of November 21, the stock price of China National Pharmaceutical was 10.87 yuan per share, with a total market capitalization of 16.3 billion yuan [6]. - There have been multiple reports of investigations involving individuals from China National Pharmaceutical, including Wang Zhiguang, a deputy general manager, who was also investigated earlier this year [8]. - The ongoing anti-corruption campaign in the pharmaceutical sector has intensified, with a joint notice issued by 14 ministries to address misconduct in the medical sales and service areas [8].