Ren Zu was unable to endure the heart of loneliness, thus he dug out both eyes, turning them into a son and daughter. This alleviated his sense of loneliness.
But good things do not last, for his children started to crave the scenery of the outside world, forgetting all about their father Ren Zu and always going out to play until they forgot the time, and even forgot to take care of Ren Zu.
Ren Zu could not see anything, it was total darkness.
But at time, he could see a little bit of light.
To this, he felt perturbed, and asked the Attitude Gu.
Attitude Gu told this to him, "Oh, this is the eternal light given out by the Faith Gu."
[Part 6.1: Ten Extreme Physiques]
Ren Zu's ten children, eldest son Verdant Great Sun, second daughter Desolate Ancient Moon... the ten children's aptitude defied heaven, thus heaven was wary and did not give them a long lifespan. In the Gu world, the ten children also represented the top ten most extreme aptitudes!
That is — the ten extreme physiques!
"Ren Zu's ten children died one by one, and Ren Zu was about to die of old age. But at the end, Ren Zu gathered the corpse of his ten children and sacrificed himself, all going into the stomach of the Derivation Gu. Derivation Gu's stomach burst, exploding and countless life spreading across the land, creating the first batch of mortals. These mortals did not have Ren Zu or the ten children's talent, but they could cultivate after awakening their aperture. Humanity thus grew and developed, forming today's size. Of course, that is all a mythological story."