Research on the Construction of Emergency Logistics Supply Chain System Based on the Outbreak of New Crown PneumoniaLandong Wang, Xueqing Wang, Wancheng Yan, Hanhan Zhang, Qihao Peng and Hanjie WangE3S Web Conf., 261 (2021) 03060DOI: https://doi.org/10.1051/e3sconf/202126103060