If the spiritual energy contained in a low-grade spiritual stone is one unit, the spiritual energy contained in a middle-grade spiritual stone is one thousand units.
How much is one unit of spiritual energy?
Gu Xinchao influenced Danzhusheng through the Demon Seed and learned from his lifestyle-oriented Golden Core Cultivator friend that one unit of spiritual energy is roughly equivalent to the mana of an ordinary Foundation Establishment Initial Stage cultivator of the Xuanhuang Sect executing a full-force attack.
Chapter 270