A subway station in Chicago
Saw the Sears Tower, which is the tallest building in the US. Forgot to take a picture.
Took a glance at the Chinatown:
With the help of Ye, we visited the famous Fermi Lab, which is the No. 1 high energy physics lab in the world.
A student dorm in Fermi Lab
Countries in collaboration
Had the well-known deep-dish pizza as dinner. Best pizza ever! 
Chicago's Union Station, is the most beautiful train station I've ever seen:
See also:
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