![Hongmeng Zhixing joins hands with the China Exploration and Exploration Association to measure the mountains and rivers of the motherland with intelligence[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)
From the lack of forests and few trees to the green trees hugging the city, from "sand into people retreat" to "green into sand retreat", from sparse forests and shallow grass to green shade and mountains, in recent years, a thick and colorful green picture is impregnated with Sanqin...
10-06
