1908, the construction of Kaohsiung Port was completed, and the area was covered by the sediment at the bottom of the port, which changed from Yantian Zeguo to Haipu New Land. 1928, kaohsiung municipal affairs service center moved to purong town (formerly kaohsiung municipal government, now kaohsiung history museum), which developed rapidly. Since the establishment of Yancheng District after the war, Kaohsiung City was the most populous administrative district in the1960s. However, due to the eastward movement of the commercial center, the population began to drop sharply. In 2004, it replaced Qijin District and became the least populous administrative district in the city.