  We discuss the correlations of charming penguin contributions to
$B\to\pi\pi$, $\pi K$ and KK using approximate flavor SU(3) symmetry. Strong
constraints are found from the direct CP asymmetries especially in $\pi K$
modes. We make a global fit to the latest data and find that only a small
charming penguin is allowed, and the size of color-suppressed tree amplitude
(C) relative to tree amplitudes (T) remains large $C/T\simeq0.6$, which
disfavors the possibility of a large charming penguin as an explanation for the
$\pi\pi$ puzzle. We show that a small charming penguin can still have sizable
effect in the time-dependence CP asymmetries in KK mode.
