Hold a rod not by grabing it with the whole palm, but split the span into two dots. One dot on the index finger underneath the rod acts as the pivot, and another one at the root of the palm placed above the rod acts as the balancing arm. We can tilt the rod the other end of the rod this way without lifting the rod itself.
This is what allows the power to go along the rod to the other end, and it is said to go over.
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