Chop wood; Carry water.

Before and after.

“Enlightenment, when it comes, will come in a flash. There can be no gradual, no partial, Enlightenment. The highly trained and zealous adept may be said to have prepared himself for Enlightenment, but by no means can he be regarded as partially Enlightened—just as a drop of water may get hotter and hotter and then, suddenly, boil; at no stage is it partly boiling, and, until the very moment of boiling, no qualitative change has occurred. In effect, however, we may go through three stages—two of non-Enlightenment and one of Enlightenment. 

To the great majority of people, the moon is the moon and the trees are trees. The next stage (not really higher than the first) is to perceive that moon and trees are not at all what they seem to be, since ‘all is the One Mind.’ When this stage is achieved, we have the concept of a vast uniformity in which all distinctions are void; and, to some adepts, this concept may come as an actual perception, as ‘real’ to them as were the moon and the trees before. It is said that, when Enlightenment really comes, the moon is again very much the moon and the trees exactly trees; but with a difference, for the Enlightened man is capable of perceiving both unity and multiplicity without the least contradiction between them!”—The Zen Teachings of Huang Po: On The Transmission Of Mind