“使马克思主义在中国具体化”①是毛泽东领导中国革命的指导思想，也是贯穿其调查研究活动的主要精神。毛泽东不仅将此作为调查研究实践的出发点，也将此体现在调查研究的理论中，最终又通过调查研究来实现这一目标。可以说，调查研究充当了马克思主义中国化的桥梁。这种桥梁 “To embody Marxism in China” (1) is the guiding ideology by which Mao Zedong led the Chinese revolution and is also the main spirit that runs through his investigation and research activities. Mao Zedong not only regarded this as the starting point for investigation and practice, but also embodied it in the theory of investigation and research, and finally achieved this goal through investigation and study. It can be said that the investigation and study have served as a bridge for the sinicization of Marxism. This bridge