18,000 years later, Devil Flame had already refined and absorbed all the special crystals he had obtained, and his divine body had recovered to about 40%.
With about 40% of his divine body, Devil Flame's realm had recovered to the peak of the fourth-level Ruler, which was infinitely close to the fifth-level. His battle strength was undoubtedly at the fifth-level, even among the fifth-level Rulers, he was extremely strong.
Upon hearing Jian Wushuang's question, Devil Flame hurriedly said, "Ruler, there are many ways to judge the comprehension of universal principles in the vast universe, but the most convincing one is the Principle Sea."
"Principle Sea? What is that, the universal Principle Sea?" Jian Wushuang asked in puzzlement.
"No." Devil Flame shook his head. "Principle Sea is actually a test for the comprehension of universe principles. There are 33 levels of Principle Sea, corresponding to 33 different levels of the comprehension of universe principles."
