Zhang Haiyang fetches goods at a distribution center in Sanya, south China's Hainan Province, Aug. 14, 2022. After the recent COVID-19 resurgence in Sanya, a coastal resort city, Zhang Haiyang, 22, a second-year graduate student, and his girlfriend Wu Fanli, 21, have joined a team of volunteers. They have driven a minivan to deliver daily supplies to local residents. Starting from 6 a.m. Zhang and Wu can deliver more than 100 orders per day.