Is a method for a variety of factories, mines, enterprises, living area, stations, customs terminals, schools, stadiums, hotels, City Plaza, and so as a way to identify and establish the after processing of rust hollow rod of iron. It is used in conjunction with flags, giving the visual effects to convey the purpose of identification, publicity. Tiananmen Square is the first root Flanagan flagpole flagpole with the flag in 1949 when the founding ceremony of Chairman Mao, 22 meters high. And now the flag pole is May 1, 1991 re-built, height of 32.6 meters.