On November 26th, aviation stocks fell, while Capital Airport, Meilan Airport and Cathay Pacific Airways fell 3.6%, and Air China Limited fell 3.26%. A new variety of novel coronavirus, B.1.1.529, has been detected in South Africa, the National Institute of Infectious Diseases of South Africa said in a statement on the 25th. Scientists have found that the number of mutations in newly altered diseases may be double that of Delta, which can avoid the body's immune mechanism, and the immunity will be reduced after vaccination or infection. In addition, there were three new locally confirmed cases in Shanghai yesterday. As of 10:00 on Nov. 26, two flights in Shanghai had been affected by the epidemic, with more than 30 percent of flights canceled at Shanghai Pudong Airport, according to CCTV.