Aerial photo taken on July 7, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 6, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 7, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 7, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 7, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 7, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 6, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 7, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 6, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)

Aerial photo taken on July 6, 2018 shows the lawn on a mountain in Zhengyang Town of Pingli County, northwest China's Shaanxi Province. Located on a mountain with altitudes of 1,800 to 2,500 meters, the lawn in Zhengyang Town has become a tourist attraction in summer vacations. (Xinhua/Tao Ming)