For the New Crown vaccine, get the first dose of Koxing and you can get the second dose of Lanzhou Biological. If you have Koxing, try to get Koxing vaccine in the second shot. If you have Koxing vaccine in the first dose, you can have Lanzhou Biological Koxing vaccine in the second dose. Because Koxing New Crown vaccine and Lanzhou Biological New Crown vaccine are both inactivated vaccines, only the manufacturers are different, and the inactivated New Crown vaccines from different manufacturers can be mixed. Although the two shots of the inactivated vaccine can be given by different manufacturers, if the first shot of the inactivated vaccine is given, it is best to give the second shot of the inactivated vaccine to produce effective immunization. However, if the first dose of inactivated KXSG vaccine is given, it is better to give the second dose of inactivated KXSG vaccine as it will be more effective in immunization. If you need to receive the vaccine, please go to the CDC designated institutions or hospitals for consultation and vaccination in time to avoid adverse consequences.