The former site of Mengzi Customs, also the former site of the General Post Office of Mengzi Daqing, known as "Yunnan First Pass", the first customs site opened in Yunnan after the Sino-French War, a single-story palace-style wooden structure, which displays a lot of information pictures, you can understand the history of the past. From ancient times to the present, Mengzi is a "fortress", and there are many troops stationed here, border fortress, here is not like a small city, high-rise buildings, brightly lit.