The $\Delta I=1/2$ rule and other matrix elements

Abstract

Recent work by J.Prades and myself on $K\to\pi\pi$ is described. The method we use to consistently connect long and short distances is described and numerical results for the $\Delta I=1/2$ rule and on $B_6$, the parameter relevant for the strong part of $\epsilon'/\epsilon$, are given in the chiral limit.