A worker waters the lawn at Tianjun Mountain scenic spot in Ulanhot City, north China's Inner Mongolia Autonomous Region, June 30, 2020. Tianjun Mountain, located in the suburb of Ulanhot, was once cratered and lack of vegetation due to the extraction of stones in the past time. In recent years, the local government is committed to ecological restoration and has transformed the barren mountain into a scenic spot to boost local tourism. (Xinhua/Liu Lei)

Photo taken on June 30, 2020 shows the scenery of Tianjun Mountain in Ulanhot City, north China's Inner Mongolia Autonomous Region. Tianjun Mountain, located in the suburb of Ulanhot, was once cratered and lack of vegetation due to the extraction of stones in the past time. In recent years, the local government is committed to ecological restoration and has transformed the barren mountain into a scenic spot to boost local tourism. (Xinhua/Bei He)

Tourists visit Tianjun Mountain scenic spot in Ulanhot City, north China's Inner Mongolia Autonomous Region, June 30, 2020. Tianjun Mountain, located in the suburb of Ulanhot, was once cratered and lack of vegetation due to the extraction of stones in the past time. In recent years, the local government is committed to ecological restoration and has transformed the barren mountain into a scenic spot to boost local tourism. (Xinhua/Bei He)

A man-made lake is seen at Tianjun Mountain scenic spot in Ulanhot City, north China's Inner Mongolia Autonomous Region, June 30, 2020. Tianjun Mountain, located in the suburb of Ulanhot, was once cratered and lack of vegetation due to the extraction of stones in the past time. In recent years, the local government is committed to ecological restoration and has transformed the barren mountain into a scenic spot to boost local tourism. (Xinhua/Bei He)

Photo taken on June 30, 2020 shows the scenery of Tianjun Mountain in Ulanhot City, north China's Inner Mongolia Autonomous Region. Tianjun Mountain, located in the suburb of Ulanhot, was once cratered and lack of vegetation due to the extraction of stones in the past time. In recent years, the local government is committed to ecological restoration and has transformed the barren mountain into a scenic spot to boost local tourism. (Xinhua/Liu Lei)

Tourists visit Tianjun Mountain scenic spot in Ulanhot City, north China's Inner Mongolia Autonomous Region, June 30, 2020. Tianjun Mountain, located in the suburb of Ulanhot, was once cratered and lack of vegetation due to the extraction of stones in the past time. In recent years, the local government is committed to ecological restoration and has transformed the barren mountain into a scenic spot to boost local tourism. (Xinhua/Bei He)

A corner of a man-made lake is seen at Tianjun Mountain scenic spot in Ulanhot City, north China's Inner Mongolia Autonomous Region, June 30, 2020. Tianjun Mountain, located in the suburb of Ulanhot, was once cratered and lack of vegetation due to the extraction of stones in the past time. In recent years, the local government is committed to ecological restoration and has transformed the barren mountain into a scenic spot to boost local tourism. (Xinhua/Bei He)