２０年代乡土小说主流地位的确立和基本特征的形成，一个重要的原因在于它紧紧抓住了改造国民性文化批判的大题目。这个大题目的抓取和展开是在鲁迅的影响下进行的，具体表现于题材和主题的转换，文化视界的拓展，国民心态的揭示，民俗文化的批判等四个方面。 One of the important reasons for the establishment of the mainstream status of the local novels and the formation of the basic features in the 1920s is that it firmly grasps the major issue of transforming the criticism of the national culture. The capture and unfolding of this major topic are carried out under the influence of Lu Xun, which is manifested in four aspects: the conversion of themes and themes, the expansion of cultural horizon, the disclosure of national mentality and the criticism of folk culture.