Energy condensation stage 

Frank went into deep thought.

"At the body refinement stage, they could manipulate energy for a period of time, but then what would be a quantitative change from that?" frank mused

After a few seconds,

Frank's eyes flashed with realization.

"You will be able to control energy without limit?" frank asked

Of course he knew that it was much more complicated than that, but he wouldn't say what he didn't know for sure.

"Yes, but of course it's more complicated than that."

"The energy condensation stage allows the cultivator to take energy into the body, filter it and condense it into one's own energy," Arthur explained.

"Once the energy has been condensed and changed into your own, then you will officially step into the energy condensation stage, where you will be able to create your own energies with the help of the world's energy, of course. No cultivator can survive without the world's energies." Arthur commented

"Thank you for the enlightenment," Frank said in a bow.