Characteristics of energy transfer
First, the high energy of a substance is always actively transmitted to the same kind of low energy substance, and the low energy substance can only passively absorb the same kind of high energy.
The second is the material energy transfer and progressive transfer.
The third is that material energy is easy to transfer in the same medium, and the ability to transfer in the upper medium is poor, and it is not easy to transfer in the lower medium.
The fourth is that energy transfer must be transmitted by particles as a medium, and its form is "wave-particle duality". Because energy cannot leave matter, energy can only be transferred in particles of matter.