Introduction to the main exhibition hall: The main exhibition hall is located in the middle of the field compound, covering an area of ​​more than 700 square meters. It is composed of two rows of bungalows and wing rooms on the east and west sides forming a "kou" shape. On the wall pillars on both sides of the main entrance are the couplets "Forty years of history are settled in Haifeng, and the youth of 80,000 people remain forever in Yuanhua". The surrounding exterior walls are arranged according to the history of that year, and are full of Chairman Mao's quotations and revolutionary propaganda posters. .