A possible pathway of the massive compact galaxies at z > 6 in the no-AGN scenario. First, a phase of expansion as a result of mass loss (triggered by feedback; e.g., L. Fan et al. 2008) or interaction of the SMBH with the stars in the central region (e.g., M. C. Begelman et al. 1980; J. G. Hills 1983; T. Ebisuzaki et al. 1991; G. D. Quinlan 1996) is required to lower the densities and velocity dispersions to those of massive compact quiescent galaxies at z = 4–5. After that the galaxies grow mainly in an inside-out fashion, due to minor mergers (e.g., R. Bezanson et al. 2009; T. Naab et al. 2009; P. G. van Dokkum et al. 2010).