In the early years, back in the Celestial Book Universe, he had once made a deal with Taiyang Riyao, that is, the Empress, to obtain the Earth Core Flame Heart, so as to rapidly cultivate the Fire Dharma Earth Script Talisman and achieve the Nine Abyss Flame Ancestral Dharma as soon as possible.
After that, seeing him successively cultivate the Xuanxiao Thunder Ancestor Dharma and the Ninth Heaven Thunder Ancestor Dharma, the Empress must have formed her own guesses.
Thus, during an earlier round of rewards granted to Dragon Tiger Mountain's Celestial Master Mansion, there had been a treasure called the Innate Dual Essence, no matter how one looked at it, it seemed prepared specifically for Lei Jun.
If at that time it was still only speculation, then with this new bestowal of Heaven and Earth Inversion Flow, it basically shows that the Tang Imperial Court has already confirmed that Celestial Master Lei's root bone is the Dual Polarity Immortal Body.
