Zhang Xin (L), head of a local Cainiao Network Station, checks a customer's express tracking number in Taiyuan, north China's Shanxi Province, Jan. 15, 2019. As the Spring Festival approaches and e-commerce companies' online shopping promotions kick off, Zhang Xin and his colleagues have to handle 3,000-5,000 parcels every day. Despite the heavy workload, Zhang Xin tries to offer better service for customers' convenience. (Xinhua/Cao Yang)