Aerial photo taken on Nov. 30, 2019 shows the scenery of roads and fields in suburban Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Xu Haitao)

  Aerial photo taken on Nov. 30, 2019 shows the scenery of roads and fields in suburban Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)

  Aerial photo taken on Nov. 30, 2019 shows the scenery of roads and fields in suburban Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)

  Aerial photo taken on Nov. 30, 2019 shows the scenery of roads and fields in suburban Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)