A high-definition digital camera is seen at the Yuyuantan Park in Beijing, capital of China, March 18, 2019. Beijing park management center will work with Chinese technology firm Huawei and China Mobile's Beijing branch to improve parks management with 5G application in Beijing. (Xinhua/Li Jundong)

A technician tests 5G network at an emergency operation center of the Yuyuantan Park in Beijing, capital of China, March 18, 2019. Beijing park management center will work with Chinese technology firm Huawei and China Mobile's Beijing branch to improve parks management with 5G application in Beijing. (Xinhua/Li Jundong)