Another less painful test is done to test the release of chi through the fingers in the Bu Tze techniques. A standard 8 by 10 piece of paper can be held and the student will thrust at its center with a straight finger thrust. If he has learned to release the paper will make an explosive popping sound and often a tear or hole will appear in the center of the paper. Some paper is tougher than others are and sometimes several strikes may be needed to tear a strong piece of 8 by 10 paper. A newspaper is also useful.
Newspaper is relatively easy to tear and so several sheets can be held together.
Correct releasing into a newspaper will often shred it. The paper explodes into confetti as if hit with a shotgun blast. Releasing energy from the arms can be greatly enhanced by learning to release with the whole body. Far Jing is the correct term to refer to such explosive power. Once the student has develop the root depth, and learned to release energy through the limbs he then will learn Far Jing.