It's open.
Traffic lights are to ensure road traffic safety. Last time, in order to prevent and control the epidemic, the traffic lights were turned off and changed to a one-way street. There is no epidemic now, so the traffic lights are on.
Datong, formerly known as Yunzhong, Pingcheng and Yunzhou, is a prefecture-level city under the jurisdiction of Shanxi Province, the second largest city in Shanxi Province, a key city in the central region approved by the State Council, a sub-central city in the province, a central city in the border area of Shanxi, Hebei and Mongolia in China, and an important comprehensive energy base.