Unlike the suns born from the Golden Crows in ancient times, the suns after the Antiquity became embodiments of utmost Yang force, possessing boundless might.
Countless cultivators relied on the sun in their cultivations—otherwise the Radiant Sun Sect would never have appeared.
In the Great Qian era, the sun was taken by the First Qian Emperor, the Zhongtian Emperor, who cast a seal upon it and claimed it as his own.
In the Great Yu era, when the First Yu Emperor Wu Yao saw that the Zhongtian Emperor had sealed the sun, he laid down another layer of sealing on top of that.
Because of this, the Zhongtian Emperor could not fully possess the sun, and neither could Wu Yao.
When Wu Yao was apparently displaced to the outside world, Lu Yang had originally thought the second seal could never be undone.
Unexpectedly, Guan Shanhai held the method to break that second seal.