Yun Che is her direct disciple. She places a lot of hope in him and also cares for him a great deal. Their relationship became complicated after Yun Che had sex with her to cure her of the Horned Dragon's Blood. Yun Che ran away, fearing for his life. After reuniting, she forgave him and did not mentioned the affair afterwards and continued to treat him as her disciple.
At first, she was grateful to him for saving her sister and wished to fulfill his desire of attending the Profound God Convention and seeing the Heavenly Slaughter Star God. When she realized Yun Che had numerous secrets including the Sky Poison Pearl and the Evil God Legacy she became very protective of him. She accepted him as her direct disciple.
Her dedication to Yun Che as his master is exceptional. She killed her own sect's elders to protect Yun Che's secrets. She purposefully baited Huo Rulie to win over the Golden Crow’s Record of the Burning World up to the 10th level to give to Yun Che. She offered thousands of virgin female disciples of the sect to Yun Che to raise his profound strength. When he rejected that method, she proceeded to look for ways to gather ingredients for the Universe Penta Jade Pellet. She gave him the Buddha Heart Lotus of Nine Resurrections that she had painstakingly raised for 9000 years without hesitation. She even put her life on the line to kill the Ancient Horned Dragon for him.
After Yun Che had sex with her, her outward relationship with Yun Che has not changed from master and disciple. She did forgive him for his crime because he had saved her life and also inadvertently allowed her profound strength to greatly increase. It is currently unknown what she truly feels in her heart for Yun Che. In fact, her exact motivation for helping, training, and protecting him to such extent remains a mystery.
She cares a lot for her younger sister. Mu Bingyun is her only family member in the entire world. When Mu Bingyun was ambushed and poisoned by Huo Rulie, she exacted revenge by seriously injuring all 3 Flame God Realm sect masters and exterminating 13 smaller star realms affiliated with the Flame God Realm.