First we shall review CDA’s treatment of power in discourse. We then examine analytically the notion of power as defined in terms of mutual dependency relations. This is followed by the introduction of situated discourse, another key concept of this chapter, and the modelling methodology. The power-exercising behaviours found in the Min Dialect Dictionary Launching Symposium, videotaped data lasting 120 minutes, are modelled as a case study. The chapter concludes with a brief discussion of theoretical implications and issues for future research.