Aerial photo taken on May 18, 2020 shows the Baitashan Park and its surroundings in Chengguan district of Lanzhou, Northwest China's Gansu province. The Lanzhou municipal government's afforestation and forest conservation efforts since 2013 have achieved good environmental benefits — the city's water resources improved, the urban climate was fine-tuned, and the amount of sand and dirt in the Yellow River also decreased. [Photo/Xinhua]
Aerial photo taken on May 18, 2020 shows the Gaolan Mountain in Chengguan district of Lanzhou, Northwest China's Gansu province, along with the city's downtown area. [Photo/Xinhua]
Aerial photo taken on May 18, 2020 shows the Gaolan Mountain in Chengguan district of Lanzhou, Northwest China's Gansu province, along with the city's downtown area. [Photo/Xinhua]
Aerial photo taken on May 18, 2020 shows the Baitashan Park and its surroundings in Chengguan district of Lanzhou, Northwest China's Gansu province. [Photo/Xinhua]
Aerial photo taken on May 18, 2020 shows the Gaolan Mountain in Chengguan district of Lanzhou, Northwest China's Gansu province, along with the city's downtown area. [Photo/Xinhua]
Aerial photo taken on May 18, 2020 shows the Zhongshan Bridge over the Yellow River in Chengguan district of Lanzhou, Northwest China's Gansu province. [Photo/Xinhua]
Aerial photo taken on May 18, 2020 shows a cultural park in Chengguan district of Lanzhou, Northwest China's Gansu province. [Photo/Xinhua]
Aerial photo taken on May 18, 2020 shows the Baita Mountain in Chengguan district of Lanzhou, Northwest China's Gansu province. [Photo/Xinhua]
