Han Yan was solely focused on her grandmother's safety, oblivious to Mu Beichen's calls. Her mind was merged with the Cold Sky Sword, and as the Netherworld Blood Veil approached her, she instinctively swung her sword without dodging.
Seeing this, both Mu Beichen and the Supreme Elder were burning with anxiety. There's no need to elaborate on Mu Beichen's concern for Han Yan, but the Supreme Elder, who initially held grudges against her, had a completely changed attitude since she made a remarkable impact at Long Yan Academy, viewing her as the backbone of the Mu Family.
