So, as long as all the Dragon Source Crystals operated normally, releasing energy as they should, it wouldn't arouse the suspicion of the Sky Dragon. That was the method employed. At the same time, through the Energy Filtering and Conduction System, the energy inside the Dragon Source Crystals could be extracted for use without waste. The extracted substance was pure energy, which the mental prowess of the Sky Dragon depended on for existence.
During this time, the Federation had been doing exactly that. The energy from the Dragon Source Crystals was still being utilized, and the mining on Dragon Source Star hadn't slowed down the slightest. On the contrary, mining operations had intensified. After extraction, the Dragon Source Crystals were transported to a Resource Planet for energy separation and filtration, creating stores of pure energy.