Before coming to Jiayuguan City, I only knew that this is the ancient silk traffic fortress, with the world's "first Xiongguan" - Jiayuguan, in order to better know him, we came to Jiayuguan City Museum. The exhibition hall is divided into three parts: brilliant, historical and outlook. The first thing I saw when I entered the museum was a status quo map of Jiayuguan City, looking south to Qilian Mountain and north to Montenegro. The location of the entire Hexi Corridor stretches more than 1,000 kilometers. Jiayuguan is located in the narrowest place in the Hexi Corridor. It is called the throat, the first pass in Hexi, and it has been a place for soldiers and soldiers in all generations. There is a saying that Jiayuguan is named because of the name of Guan and because of the establishment of the city. "Guan" refers to Jiayuguan, "enterprise" refers to Jiugang Group. Jiugang was founded in 1958. The construction of the Bird's Nest in the National Stadium, 63% of the steel is from Jiugang, and the Three Gorges Dam, Xiaolangdi Hydropower Station, Qinghai-Tibet Railway, and Lanxin High-speed Railway all use high-quality steel produced by Jiugang. Come to the multimedia demonstration hall on the second floor, through the 180-degree round-the-screen urban propaganda film, we know that the Jiayuguan Municipal Committee and the Municipal Government have deeply implemented the four comprehensive strategic deployments, firmly established the five development concepts, and grabbed the major opportunities of the Belt and Road. We will do our best to create a model city for the innovation and development of small and medium-sized cities across the country. From the photos on display, it can be seen that the downtown area in the 1960s was still very desolate. Now Jiayuguan has developed into a city with trees and blue sky and blue lakes and snowy mountains. Planting a tree on the Gobi beach is as difficult as raising a child. It is not easy to plant trees on the Gobi Beach. First, you must dig a pit one meter deep, pull all the pebbles out of it, and then filter out the fine soil. After that, you must buy soil from the field and mix it with the fine soil and then fill it in the pit. The improved soil can only plant trees. So the cost and cost of planting trees are very high. Now with the joint efforts of the people of the city, Jiayuguan has won the title of national garden city.