  In this short survey, we derive some weyl-type universal inequalities of
eigenvalues of the Laplacian on a closed Riemannian manifold of nonnegative
Ricci curvature. We also give upper bounds for the $L_{\infty}$ norm of
eigenfunctions of the Laplacian in the same setting. A detailed proof of these
results did not seem to appear in the literature but the results follow from a
simple combination of Milman's work and Cheng-Li's work.
