A group of foreign volunteers get together on Dec 13 after doing voluntary work at the Tonganli community in East Lake High-tech Development Zone -- also known as Optics Valley of China -- located in Wuhan, the capital city of Central China's Hubei province. They volunteered to participate in community services, to thank community volunteers for their wonderful help during the COVID-19 pandemic. [Photo/WeChat account of Optics Valley of China]