The energy was like a stream of water, slowly gathering inside the energy cyclone in his dantian. The more energy it devoured, the bigger and faster it got.
Suddenly, Jia Hao felt like all parts of the body were connected with the cyclone by the streams of energy.
After feeding the cyclone for several hours, the cyclone slowly started to slow down instead of growing more and more.
Energy Gathering and Complete Transformation stages are simply interlinked with each other, like one big stage divided into two smaller realms.
The Energy Gathering Stage requires one to connect all strings of energy with the energy cyclone in the dantian. After that, one needs to build up enough energy till the cyclone becomes full and refine that energy till it gets pure.
The purer the energy, the better the effect in the Complete Transformation Stage. After all, it will need the same energy to transform your body completely.