Aerial photo taken on May 11, 2020 shows villagers planting seedlings in terraced fields in Guihua Village of Langao County in Ankang, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on May 10, 2020 shows a view of the terraced fields in Guihua Village of Langao County in Ankang, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on May 11, 2020 shows villagers planting seedlings in terraced fields in Guihua Village of Langao County in Ankang, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on May 11, 2020 shows villagers working in terraced fields in Guihua Village of Langao County in Ankang, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on May 10, 2020 shows villagers working in terraced fields in Guihua Village of Langao County in Ankang, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on May 11, 2020 shows villagers planting seedlings in terraced fields in Guihua Village of Langao County in Ankang, northwest China's Shaanxi Province. (Xinhua/Tao Ming)