Aerial photo taken on March 15, 2020 shows scenery of fields at Pumiao Town of Nanning City, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on March 15, 2020 shows scenery of fields at Pumiao Town of Nanning City, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on March 15, 2020 shows scenery of fields at Pumiao Town of Nanning City, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on March 15, 2020 shows scenery of fields at Pumiao Town of Nanning City, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on March 15, 2020 shows scenery of fields at Pumiao Town of Nanning City, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)