New york, which belongs to New York State, is the largest city in the United States. It is located at the mouth of the Hudson River on the northeast coast of the United States, bordering the Atlantic Ocean, and has a temperate continental humid climate. With a total area of 12 14 square kilometers, it consists of five districts, and the city hall is located in Manhattan City Hall Park. By April 2022, the total population will be about 8.398 million. New york is rich in educational resources, with more than 120 higher education institutions, such as Columbia University, Cooper Union College, Fordham University, new york University and new york Institute of Technology. Citizens are highly educated. Among the adults over the age of 25, 86.8% have high school education or above, and 60.7% have bachelor education or above.

Los Angeles, located in southwestern California, is the second largest city in the United States and the largest city in the western United States. It is often called "city of angels". Los Angeles covers an area of about 12 15 square kilometers, and the downtown coordinates are 34 03' north latitude and115' west longitude. The population of the city is about 4,086,700 (20 19). In 20 19, the GDP of Los Angeles was 710.9 billion dollars.

Los Angeles is also very developed in culture and education. There are world-famous California Institute of Technology, University of California, Los Angeles (ranked 24th in USNEWS), University of Southern California, Huntington Library and Getty Museum. The Los Angeles Public Library ranks third in the United States.

Located in the south of Lake Michigan, Chicago is the third largest city in the United States and one of the international financial centers in the world. Chicago has developed education and is the center of higher education in Central America. As of 20 16, there are 680 public schools, 394 private schools, 83 colleges and 88 libraries in Chicago. Among them, there are 559 junior high schools and senior high schools (including private junior high schools 147 and missionary high schools 29), 9 four-year junior colleges 19 and 7 two-year junior colleges. Colleges and universities have a full range of disciplines, from basic vocational training to advanced science, business, technology, culture and professional preparatory courses. Among them, the University of Chicago and Northwestern University are the most famous. In addition, the scientific research achievements of Argonne National Institute, Bell Laboratories and Fermilab in the western suburbs of Chicago have attracted worldwide attention, and a considerable number of China scholars and engineers work in these institutes.