Under Ye Xishui's careful planning, the relationship between the twin dragons was skillfully balanced.
Mu En was the Bright Holy Dragon, symbolizing light and, likewise, daytime.
Thus, during the day, Ye Xishui gave herself to Mu En.
Long Xiaoyao was the Dark Holy Dragon, symbolizing darkness and, at the same time, nighttime.
Thus, during the night, Ye Xishui gave herself to Long Xiaoyao.
Mu En ruled the day, while Long Xiaoyao roamed the night. Both men did it for one woman.
However, because Ye Xishui was always running between the two, she was eventually discovered by the other.
Yet neither of them said it aloud. Both tacitly acknowledged and accepted the other's existence.
Unfortunately, no matter how diligently Mu En worked, he was unable to leave behind a child.
Moreover, the peace did not last long. While the three of them were living without conflict, Du Bisou of the Body Sect came to Shrek and demanded a duel with Mu En.
During his battle with Du Bisou, both Mu En and Du Bisou suffered severe injuries.
After Du Bisou returned to the Body Sect, he soon died of his injuries.
Mu En fared no better. Everything below his waist was paralyzed.
After this happened, Mu En felt it was too humiliating. Moreover, he could no longer get it up, so he stopped seeking out Ye Xishui.
His wish to have a child with her vanished along with that paralysis.
In the end, his former lover, Ye Xishui, could only be monopolized by Long Xiaoyao alone.
It was also after that duel that Mu En no longer appeared before the world.
Even Long Xiaoyao and Ye Xishui believed Mu En had died in that great battle.
But Mu En certainly had not died. He often went to secretly watch Yan Shaozhe's