Chicago, nicknamed "Michael Jordan City", is the third largest city in the United States after Los Angeles, new york. Cities play an important role in the United States and even the whole world. First of all, geographically speaking, Chicago's inland river transportation is very developed. It is connected with neighboring Canada through the Mississippi River, the Great Lakes and the surrounding canals, and power exhibitors from all over the country come here to hold large-scale power exhibitions every year; Secondly, from the economic and trade point of view, the fluctuation of all commodity prices in the Chicago market will have a great impact on the world economy. Chicago is attracted by modern flavor and traditional colors.