Convergence of K\"ahler-Ricci flow on Fano manifolds, II

In this paper, we give an alternative proof for the convergence of K"ahler-Ricci flow on a Fano mnaifold $(M,J)$. This proof differs from that in [TZ3]. Moreover, we generalize the main theorem of [TZ3] to the case that $(M,J)$ may not admit any K"ahler-Einstein metrics.