Passage: Terminal 1 was opened on October 1, 1999 along with a 4000-metre runway and a cargo hub. It was built to handle the demand for traffic and to relieve Shanghai Hongqiao International Airport's traffic. The exterior of Terminal 1 is shaped like a seagull, and has 28 gates, 13 of which are double-decker gates. The capacity of Terminal 1 is 20 million passengers. It currently has 204 check-in counters, thirteen luggage conveying belts and covers an area of 280,000 square metres.The gates for Terminal 1 is 1–12, 14–29 (linked with jetway), while the remote gates are 201–211, 533–543, 115–117, 201–211, 251–255, 256–258, and 511–521.

Question: Which terminal is being discussed?
Terminal 1