(Fighting against New Coronary Pneumonia) Beijing Launches Large-scale Nucleic Acid Testing, Shanghai Has Over 500,000 Infections This Round China News Agency, Beijing, April 26. Comprehensive news: China's National Health Commission announced on the 26th that there were 1,923 new confirmed cases in mainland China on the 25th, including 15 imported cases and 1,908 local cases. There were 15,889