Workers dispatch parcels at a logistics company in Haizhou District of Lianyungang, east China's Jiangsu Province, Dec. 12, 2018. Falling on December 12, the "Double 12" online shopping festival has brought increased business opportunities to China's e-commerce and logistics companies. (Xinhua/Geng Yuhe)

A worker sorts parcels at a logistics company in Chengbu Miao Autonomous County of Shaoyang, central China's Hunan Province, Dec. 12, 2018. Falling on December 12, the "Double 12" online shopping festival has brought increased business opportunities to China's e-commerce and logistics companies. (Xinhua/Yan Qinlong)

Workers sort parcels at an express delivery company in Donghai County, east China's Jiangsu Province, Dec. 12, 2018. Falling on December 12, the "Double 12" online shopping festival has brought increased business opportunities to China's e-commerce and logistics companies. (Xinhua/Zhang Kaihu)

An express delivery company staff loads parcels onto a van in Fuyang, east China's Anhui Province, Dec. 12, 2018. Falling on December 12, the "Double 12" online shopping festival has brought increased business opportunities to China's e-commerce and logistics companies. (Xinhua/Wang Biao)

Workers sort parcels at an express delivery company in Donghai County, east China's Jiangsu Province, Dec. 12, 2018. Falling on December 12, the "Double 12" online shopping festival has brought increased business opportunities to China's e-commerce and logistics companies. (Xinhua/Zhang Kaihu)

Workers use an automated sorting system to process parcels at an express delivery company in Fuyang, east China's Anhui Province, Dec. 12, 2018. Falling on December 12, the "Double 12" online shopping festival has brought increased business opportunities to China's e-commerce and logistics companies. (Xinhua/Wang Biao)