[Part 5.1: Verdant Great Sun and Desolate Ancient Moon ]
Legend says, Ren Zu had obtained the Attitude Gu. Attitude Gu was like a mask, and without a heart Ren Zu couldn't wear it.
Because before this, Ren Zu had given his heart to the Hope Gu, and from then on he never feared difficulty.
But if Ren Zu wanted to use the Attitude Gu, he needed to have a heart.
Ren Zu was troubled, thus he asked Attitude Gu; he said, "Oh Gu, sometimes attitude says its all. Now that I have encountered a problem, you know it, thus I'm here to seek advice."
Attitude Gu said, "This is not hard. Ren Zu, you lack a heart, thus you just have to find a new one."
Ren Zu was confused, asking again, "Then how can I find a new heart?"
Attitude Gu sighed, "Heart, is nowhere and everywhere. Finding a heart, it is both easy and difficult. With your situation, you can obtain a heart now."
Ren Zu was overjoyed, "Quick, tell me, how?"
Attitude Gu warned him, "This heart, is called loneliness. Human, are you sure you want it? Once you obtain it, you will face endless pain, loneliness and even fear!"
Ren Zu did not listen to his warning, he continued asking.
Attitude Gu could not defy Ren Zu's orders, thus he said, "You only have to stare at the sky on a starry night, and say nothing. Once you reach daylight, you will obtain the heart of loneliness."
That night, it was a star-filled sky.
According to Attitude Gu's instructions, Ren Zu sat alone at the mountain peak, staring at the night sky.
Before this, his life was very difficult, constantly struggling for survival, he had no time to admire this beautiful yet mysterious sky.
But now, as he stared at the starry sky, his thoughts began floating. Constantly thinking about himself, such a meagre and weak being like himself, living a life of constant fear and insecurity.
"Sigh, although I have Hope Gu, Strength Gu, Rules Gu and Regulation Gu, and Attitude Gu, to survive in this land, it is still difficult as ever. Even if I die tomorrow, it is not shocking. If I die, will the world remember me? Will anyone rejoice over my existence, and grieve over my death?"
Thinking of this, Ren Zu shook his head.
In this world, he was the only human, how can there be others?
Even with Gu accompanying him, he still felt a strong sense of —
Loneliness.
Heart of loneliness!
At this moment, when Ren Zu felt lonely, his body suddenly had a brand new heart.
The sun rose from the horizon, and shone on his face. But Ren Zu felt no happiness, and instead felt an endless pain, despair, confusion and even fear.
He could not endure this loneliness and fear, for all he felt was the advent of darkness and apocalypse!
Thus, he painfully cried, stretching out his fingers and digging out his eyes.
His left eye fell onto the ground and transformed into a young man. He had golden hair and a strong body. Once he appeared, he kneeled at Ren Zu's feet, saying: "Oh Ren Zu, my father, I am your eldest son, Verdant Great Sun."
At the same time, his right eye turned into a young girl, and she held Ren Zu's hand, saying, "Oh Ren Zu, my father, I am your second daughter, Desolate Ancient Moon."
Ren Zu laughed loudly, tears flowing out of his empty sockets. He said 'good' three times and continued, "I have children now, I can finally endure the pain of the heart of loneliness. From now one, there will be people celebrating my existence, and grieving for my death, even if I die now, you will remember me."
"Only that..." Finally, he sighed, "I lost both my eyes, and can no longer see the light. From now on, you two shall observe this world for me."
[Part 5.2: ???]
In the legend, before Ren Zu died, he gave birth to ten children. The eldest son Verdant Great Sun, second daughter Desolate Ancient Moon. Among the ten, there was one named Northern Dark Ice Soul. Ren Zu's legends whether real or false, alluded to many secrets in Gu Master's cultivation. Ren Zu's ten kids individually represented ten types of ultimate aptitudes.
In Ren Zu's story, his ten kids didn't have a long life. In reality, it is difficult for the Gu Masters who hold ten extreme physiques to grow and mature, almost all dying an untimely death. Of course, if they can really grow to become a Rank six, they will be able to sweep through same stage opponents and even perform miracles such as fighting a higher rank!