From 1840 to 1949, they are collectively called China bourgeois revolution (modern democratic revolution). Among them, 1840- 19 19 is called the old democratic revolution period, and the revolutions in this period were all led by petty bourgeoisie or bourgeoisie. 19 19- 1949 is called the new democratic revolution period, and the revolution in this period was led by the proletariat and its political parties. It can be seen that the most fundamental sign of the difference between the new and old democratic revolutions is who is the leading class and who holds the leadership. Since the new democratic revolution is led by the proletariat, should it be a proletarian socialist revolution? No, the new-democratic revolution refers to the revolution led by the proletariat and led by the masses of the people against imperialism, feudalism and bureaucratic capitalism. It is called the new and special bourgeois democratic revolution, or "democratic revolution" for short.