Junior Sister Xu's awakening was definitely that of the Phoenix Bloodline.
The Phoenix Bloodline has been passed down through the generations in the Xu Family of Southern Heaven, but not all cultivators can awaken it.
Firstly, the bloodline strength of Xu Family cultivators naturally varies; some have a more pronounced Phoenix Bloodline, while others have a more diluted one. It specifically involves the principle of devouring the bloodline of the Demon Race.
In any case, it is said that when little Ying Lian was born, her pupils opened to reveal bright golden doughnut-shaped iris, a clear sign of a strong and latent Phoenix Bloodline—it only returned to normal after three days.
As for her Seven Orifices Exquisite Heart, it was not awakened until she was seven years old.
With double talents in one body, she was meant to be the most dazzling genius of Kunlun, but unfortunately she met a guy with perfect Daoist Heart Clarity, who overshadowed much of her brilliance.