When a masked man had suddenly appeared in the heaven above the Nightfall Heights, most of the Ancient Old Ones were quite startled for several reasons.
Firstly, it was because this masked man was at the 8th False Immortal cultivation realm and only an Ancient Old One could ever attain to the False Immortal level; none of the other abyssal races were able to do so as this was only unique to the cultivation technique of the Ancient Old Ones.
Secondly, the Ancient Old Ones were only left with 3 8th False Immortal cultivators and they were the Cardinal Priestess, the Cardinal Patriarch and Juan Xian'Er.
And Juan Xian'Er was heard to be captured by the Immortal Abyssal Gong Nephilim.
So, none of the Ancient Old Ones know exactly who this masked man was.
However, for Xuan Qiaoqiao, she was able to recognize Ji Yuan's profound animus as they had fought some dangers together while they were inside the Great Oracle Gate.