China's strict virus control policies required residents in many Chinese cities to provide a negative PCR test result from within the past 72 hours to access public transport and enter stores, office buildings, and other public venues.

中国严格的病毒防控政策要求许多城市的居民乘坐公共交通工具和进入商店、办公楼和其他公共场所时，需提供72小时核酸阴性。