Chapter 5 of the course, Modern Chinese Literature (Second edition), the contribution and influence of the four major literary societies included: 1. Contribution and influence of Lu Xun's literary society: Lu Xun was the founder and representative of Lu Xun's literary society, which had made great contributions to the development of modern Chinese literature. The works of Lu Xun's literary club profoundly revealed the dark side of society at that time, and displayed the sufferings and anger of the Chinese people, which had a profound impact on modern Chinese literature. 2. Contribution and influence of Lao She's Literature Society: Lao She is the founder and representative of Lao She's Literature Society. The unique style of the society's works, language and humor are deeply loved by readers. The works of Lao She's Literature Society covered novels, plays, essays and many other fields, which had an important impact on the development of modern Chinese literature. 3. Contribution and influence of Shen Congwen's literary club: Shen Congwen was the founder and representative of Shen Congwen's literary club. The club's works focused on describing human nature and nature, full of romanticism. The works of Shen Congwen's literary club not only caused a sensation at that time, but also had a profound impact on the development of modern Chinese literature. 4. Contribution and influence of Zhang Ailing's literary club: Zhang Ailing was the founder and representative of Zhang Ailing's literary club. The club's works revealed the social injustice and the plight of women from a female perspective. The works of Zhang Ailing's literary club were regarded as the classics of modern Chinese literature, which had an important impact on the development of modern Chinese literature.