One of the basics powers of qing-jing is the ability to leap unusual distances. The way to train involves the following classical method; stand in a hole 1" deep, knees locked (so you can't use them), sink and bow your lower back outward, and leap up out of the hole using mainly your back (some hips will come in, too). After a period of time, make the hole 2 deep, 5, 10", 2 feet, etc. When this power you've trained into your back is added to your normal highly trained leg strength, you will be able to jump very far.
Two questions come to mind with this claimed training method of 'power':
1) can the author display such powers by jumping unusual distances?
2) Is there record of people training in this manner winning any event, for example, in the Olympics?