Shi Lei used his Innate Perception, combined with the illusory black sludge substance he had seized from the Golden Core Great Demon, to continuously harvest the Mustard Seed Primordial Spirit Matter.
All of this left Qian Duoduo and Yi Xiaobai completely bewildered about what Shi Lei was actually doing.
They even mistakenly suspected that Shi Lei was practicing some kind of demonic arts or eye techniques. Yet Shi Lei offered no explanation, simply letting them assume what they wished.
Chapter 243