Two slogans put forward by the new culture movement

"Mr. De and Mr. Sai"

"Mr. De" means "democracy",

"Democracy" refers to democratic thoughts and democratic politics; "Science" mainly refers to the laws and spirit of modern natural science. The bourgeoisie preached democracy and opposed feudal autocracy, pointing the finger at Confucianism, the theoretical pillar of feudal autocracy; Advocate science and oppose feudal superstition and ignorance. This slogan reflects the requirements of China's social development and the urgent needs of the people, and has effectively promoted the development of the New Culture Movement. However, this slogan still belongs to the nature of bourgeois old democracy and has the limitations of its class and times. It can't be combined with mass movements, and it can't treat China culture and western culture from the viewpoint of historical materialism, so it can't fundamentally overthrow feudal thought. The establishment of the two banners of democracy and science in the New Culture Movement has brought about earth-shaking changes in many aspects of China, and created an excellent opportunity for the wide spread of new ideas and theories. Hu Shi, who pioneered vernacular Chinese, made an analogy to students in On Literary Improvement.

Say: you say sorry in old Chinese, I can't finish the task. As a result, the students used a long list of words to express it. But it took him only five words to get it done: "I can't do it, thank you."

Hu Shi's article "On Literary Revolution" published in "New Youth" not only advocated replacing classical Chinese with vernacular Chinese, but also advocated tearing down stale, carved and pedantic old literature and building fresh and simple new literature, which made the banner of literary revolution more distinct.

Modern official document language is developed on the basis of "critically inheriting" the ancient cultural heritage of China. In the May 4th New Culture Movement, vernacular Chinese replaced classical Chinese.