After leaving to the Profound Sky Continent she along with her husband Yun Qinghong spent some time there and got acquainted with Xiao Ying. During their time on the Profound Sky Continent Mu Yurou became pregnant with Yun Che and while she was pregnant got poisoned with a cold poison; in order for her to save Yun Che's life she had to force the cold poison into his immature Profound Veins, crippling them.
— Yun Che's first impression of Mu Yurou
Her appearance was gentle and elegant, her disposition, graceful and noble. Yet her disposition was not so much one of excessive nobility, it was more like she exuded an aura of melancholy. A deeply engraved melancholy that seemed to sit between her brows and in her soul. The melancholy was so deep that it seemed like even one thousand years would not be enough to clear it away.
Her face showed the same kind of paleness as Yun Qinghong. Even though she could walk, each step showed a noticeable weakness; even her eyes seemed to be covered in with a layer of haziness. 
Mu Yurou is the only daughter of the head of the Mu Family.
She is first seen walking into Yun Qinghong's with her brother Mu Yubai, worrying about Yun Xaio's injuries. When she first saw Yun Che she got the same feeling her husband did the they have seen each other somewhere before. 
Past Illness Edit
The illness that she received more than twenty-years ago while he was in the Profound Sky Continent.
- Internal Injuries - Her injuries are just like her husbands but on a smaller scale but none the less very severe. (internal organs failing to a large extent. His heart, lungs, and profound veins carved with scars and failure of more than ninety percent of the tendons.)
- Cold Poison - A cold poison used by Sun Moon Divine Hall; it has since completely invaded every single part of her body (blood veins, bone marrows, and even her vitals) just like her husband. Since she is a little weaker than her husband the poison is closer to invading her life veins causing the poison to flare in her body at any time; same poison that was used on Ru Xiaoya, Hua Minghai’s wife.