The dedicated line logistics from Shanghai to Zhengzhou by Yuxin Logistics takes 3 days. Yuxin Logistics complies with the postal industry standards of "Express Service" issued by the State Post Bureau. The time limit for intra-city express service shall not exceed 24 hours, and the time limit for domestic cross-regional express service shall not exceed 72 hours. Shanghai to Zhengzhou is an inter-provincial service, so Yuxin Logistics' dedicated line logistics from Shanghai to Zhengzhou takes 3 days.