  Let $(M; g)$ be a smooth compact Riemiannian manifold without boundary and
$g_{k}$ be a metric conformal to $g$. Suppose $vol(M;
g_{k})+||R_{k}||_{L^{p}(M;g_{k})} < C$, where $R_{k}$ is the scalar curvature
and $p > \frac{n}{2}$. We will use the 3-circle theorem and the John-Nirenberg
inequality to study the bubble tree convergence of $g_{k}$.
