Take the Chicago Metro to Chinatown. The Chicago Metro has eight different colours. It was built in 1892 and has a total length of 164.5 kilometers. It is the second busiest underground transportation system in the United States. A one-way ticket for $3 is available three times in two hours. After arriving at the Chinatown Station, notice that there are two exits: the exit of Cermak Street is the old district, where it feels shattered and depressed. Many people speak Cantonese, representing the older generation of immigrants. Archer Street exit is Chinatown Square, where shops are novel and many young people gather. Fluent Mandarin speaking represents a new generation of immigrants. The Chinatown, which began in 1915, is the second oldest Chinese gathering place after San Francisco.