Songshan Airport is often proposed to demolished by politicians. Located on the edge of Taipei City, there are many restrictions. Faced with the increasing number of passengers in the international terminal in the future but unable to expand the area of the airport. What can it look like without demolition in the future? Songshan Airport is the business card of Taipei City. The old terminal is not allowed to change the historical facade and the underground MRT route caused the cut-off construction area on the ground to increase the difficulty of additional construction.