![A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)](http://www.ecns.cn/hd/2019/03/08/e9719fe146db4e699965ec9c0e2df0f6.jpg)
A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)
![A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)](http://www.ecns.cn/hd/2019/03/08/452f17d9ae294fbd918669decc4f76de.jpg)
A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)
![A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)](http://www.ecns.cn/hd/2019/03/08/1bb7487cbc174525a739960afc91020d.jpg)
A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)
![A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)](http://www.ecns.cn/hd/2019/03/08/782ea582e50749fe8182781167757349.jpg)
A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)
![A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)](http://www.ecns.cn/hd/2019/03/08/876243325fd84aacafefc2823619e389.jpg)
A drone put into use by Chengguan, urban management officers, in Shijiazhuang City, Hebei Province, March 7, 2019. The drone, with a wingspan of four meters, is used to take aerial photos of an area 138 square kilometres in size, to aid Chengguan in spotting open-air garbage and unapproved construction. (Photo: China News Service/Zhai Yujia)