Bai Xinghe had once systematically introduced the Dark Forest Theory to Li Yao, which was proposed by the cosmologist Liu the Prier in the Star Ocean Imperium.
The theory was based on the premise that the total resources in the universe was limited. Even if some of the resources were renewable, the speed of such renewal was still extremely low and could not meet the demand of various civilizations in different phases. For multiple civilizations, if they were caught in the state of 'chain of suspicion' because they lacked sufficient instruments of communication at the beginning and failed to figure out if the other civilizations were hostile, hiding themselves as much as possible and striking all the targets that exposed themselves was the most rational, optimal, and yet helpless choice.
