Diaoyan (investigation and research) occupies a special place in the politics of the Chinese Communist Party (CCP). The concept can be broken down into two distinct types: symbolic diaoyan, and standard diaoyan. The former refers to the phenomenon of top leaders promoting and initiating the coordinated implementation of a particular political line. Leaders first promote their ideas through symbolic trips and speeches, and observe the extent of support for their political line within the ranks of the party elite. If support is forthcoming, the leader will then mobilize other central leaders to carry out standard diaoyan. This refers to investigation carried out by the central leaders into their own area of political responsibility within the scope of this overarching political line, with the aim of accumulating information and model experiences to inform specific policy decisions. These two types function in tandem: symbolic diaoyan promotes an abstract political line, and standard diaoyan fleshes out its substance. This article uses the term "adaptive mobilization model" to denote the use of diaoyan in the CCP’s policy making, and discusses two specific cases of Hu Jintao’s Scientific Outlook on Development and Xi Jinping’s China Dream to illustrate how regime adaptation and legitimization of the political line occur through the process of diaoyan.