Introduction to the Collection of Calligraphy and Painting Hall: After Chairman Mao Zedong inspected Xiangcheng, famous calligraphers and painters from both inside and outside the Great Wall, from north and south of the Yangtze River, also poured ink and gave gifts of calligraphy and paintings to express their infinite nostalgia for the great man of the generation and for the great land of Xiangcheng. of deep feelings.