【Health Science】Exhibition halls, museums and art galleries of the guidelines for the normalization of prevention and control of the new crown pneumonia epidemic 【Health Science】Exhibition halls, museums and art galleries of the guidelines for the normalization of prevention and control of the new crown pneumonia epidemic 【Health Science】Exhibition halls, museums and art galleries of the guidelines for the normalization of prevention and control of the new crown pneumonia epidemic Source: China Health Education First Instance: Ding Xi Second instance: Li Bei Third trial: Wang Xingtao