Aerial photo taken on Oct. 21, 2019 shows a view of the Jinta desert populus euphratica forest scenic spot in Jiuquan, northwest China's Gansu Province. (Photo: Xinhua)

Tourists go sightseeing at the Jinta desert populus euphratica forest scenic spot in Jiuquan, northwest China's Gansu Province, Oct. 21, 2019. (Photo: Xinhua)

Aerial photo taken on Oct. 21, 2019 shows a view of the Jinta desert populus euphratica forest scenic spot in Jiuquan, northwest China's Gansu Province. (Photo: Xinhua)

Aerial photo taken on Oct. 21, 2019 shows a view of the Jinta desert populus euphratica forest scenic spot in Jiuquan, northwest China's Gansu Province. (Photo: Xinhua)

Aerial photo taken on Oct. 21, 2019 shows a view of the Jinta desert populus euphratica forest scenic spot in Jiuquan, northwest China's Gansu Province. (Photo: Xinhua)

Tourists go sightseeing at the Jinta desert populus euphratica forest scenic spot in Jiuquan, northwest China's Gansu Province, Oct. 21, 2019. (Photo: Xinhua)

Tourists go sightseeing at the Jinta desert populus euphratica forest scenic spot in Jiuquan, northwest China's Gansu Province, Oct. 21, 2019. (Photo: Xinhua)