Episode 18 recap: The Great Battle of the Nine Heavens between the Demon Clan has begun.

Xuanli questioned Mobiang about what he had done to her. Mobiang revealed that he had helped Xuanli last night by regulating her body temperature to save her life. Xuanli recalled the events of yesterday and wanted to confront Mobiang further, but he stopped her. He informed her that he would send her back to the Nine Heavens and warned her not to easily use her demonic energy again. He vowed that if there were another time, he would personally kill Xuanli.

The Demon Clan sealed off the Nine Heavens, and Jiuchen desired to reclaim the profound origin demonic energy within the mountains and reach the pinnacle of power. The Nine Heavens sought the assistance of the Heavenly Empress to help them kill the Demon Lord. As the battle was about to commence, Mobiang, in the Imperial Residence, sensed the abnormal situation in the Nine Heavens and realized the danger. He quickly took Xuanli and returned to the Nine Heavens.

At the foot of the Nine Heavens, the Demon Clan and disciples of the Nine Heavens clashed. The Demon Clan held the advantage, overpowering the Nine Heavens, resulting in severe injuries for them. Nan Hao attempted to reseal Jiuchen but failed. Meanwhile, Kuang Tian sought to kill Nan Hao but was stopped by Jiuchen. Jiuchen asked about the whereabouts of the origin demonic energy, and Nan Hao revealed that it had been taken away long ago. Enraged, Jiuchen bound Nan Hao, intending to tempt him into embracing the demonic power. In a critical moment, Mobiang arrived with Xuanli, saving Nan Hao. Mobiang and Jiuchen engaged in a fierce battle, with both sides displaying formidable strength, and neither gaining the upper hand.

Xuanli accused Qingxue of harming their fellow disciples, and Qingxue harbored a deep hatred towards Xuanli. At this moment, she intended to kill Xuanli, pointing her sword at her, and Xuanli refused to back down.