Introduction to revolutionary cultural relics: The Southwest Shandong Campaign Memorial Hall displays many precious historical photos, telegrams, letters and other revolutionary cultural relics, including Chairman Mao Zedong’s autographed telegrams to Chiefs Liu and Deng, and Comrade Liu Bocheng and Deng Xiaoping’s crossing of the Yellow River. Photos taken after the battle, photos taken during the march into the Dabie Mountains, autographed inscriptions by more than 50 veteran generals and leaders including Chen Xilian and Li Desheng who participated in the Battle of Southwest Shandong, as well as books, military history, photo albums, audio and video recordings about the Battle of Southwest Shandong and other historical data.