Aerial photo taken on Jan. 17, 2021 shows the Tawan Street in Shenyang, northeast China's Liaoning Province. Medium-risk areas in the key restricted areas of Tawan and Minglian in Shenyang have been downgraded to low-risk as all samples collected from several rounds of nucleic acid tests of the areas were negative. The lockdown of the key restricted areas was lifted on Sunday. (Xinhua/Yao Jianfeng)