Analysis of test questions: The event reflected in Figure 1 is the May 4th Movement and the beginning of the new-democratic revolution; The event reflected in Figure 2 is the Northern Expedition War, which represents the climax of the national revolution. The events in Figure 3 took place during the War of Liberation, reflecting the content of the Party Central Committee's move to northern Shaanxi. Figure 4 shows founding ceremony, representing the founding of New China and marking the end of the new democratic revolution. These four paintings reflect the revolutionary history of China's new democracy.