In this environment, Yu Niang's other personality awakened and became the real Yu Xuanji.
She used the sect master's imperial order left behind by Yu Ningshuang and three ten-thousand-year-old Profound Ice Sword Talismans to kill an elder who challenged her in public. From then on, she confirmed the sect master's authority.
Everyone was afraid of the other two ten-thousand-year-old Profound Ice Sword Talismans under her and temporarily submitted.
After that, Yu Xuanji cultivated the Heavenly Phoenix Tree Technique to the fourth level and entered the fourth Nirvana Stage. Once she succeeded, she could become a Spirit Summoner comparable to a Divine Power Martial God. In the end, during this nirvana process, she was ambushed by an elder of the sect and almost died.
From then on, Yu Xuanji's personality changed drastically. She used methods like roping in and suppression to completely stabilize her position as the sect master.