Aerial photo taken on June 30, 2020 shows the Shentian Prairie in the morning glow, which is located on the border area between northwest China's Shaanxi Province and southwest China's Chongqing Municipality. (Xinhua/Tao Ming)

Aerial photo taken on June 30, 2020 shows the Shentian Prairie in the morning glow, which is located on the border area between northwest China's Shaanxi Province and southwest China's Chongqing Municipality. (Xinhua/Tao Ming)

Aerial photo taken on June 30, 2020 shows the Shentian Prairie in the morning glow, which is located on the border area between northwest China's Shaanxi Province and southwest China's Chongqing Municipality. (Xinhua/Tao Ming)

Aerial photo taken on June 30, 2020 shows the Shentian Prairie in the morning glow, which is located on the border area between northwest China's Shaanxi Province and southwest China's Chongqing Municipality. (Xinhua/Tao Ming)