Energy Crystal Blocks are the most important field of scientific research currently presided over by Liu Yan.
As human technology continues to progress, and is on the verge of reaching the Fifth Level Cosmic Civilization, especially as the technology of Black Hole Reactors is also about to meet the standard, the energy consumption of humanity has also shown a steep upward trend. Not to mention others, just the energy consumed by the Lightstone Computing Matrix is an astronomical figure.
In units with large structures, energy is naturally abundant; for instance, once the Blue Star has built the Black Hole Reactor, there will certainly be no lack of energy, and if there is still a shortage, then building several more would solve the problem.
But what about the warships of the Fifth Level Cosmic Civilization, or smaller Shuttle Machines, single-user Mechas, small working devices, and so on?