"There's such a thing?" Han Dao raised his eyebrows. Speaking of which, Yu Xuanji's Heavenly Phoenix True Yin had helped him a lot back then. Yu Xuanji had contributed a lot to his cultivation of the Divine Power Realm. Otherwise, after he advanced back then, he would not have taken the risk to save the Hundred Spirit Sect so easily.
At that time, Yu Xuanji was only a Spirit Summoner equivalent to the Divine Power Realm.
As for Yu Ningshuang, her cultivation was already at the Emperor Realm. Her Heavenly Phoenix True Blood had probably atavism to the level of a true Heaven and Earth True Spirit. Her Heavenly Phoenix True Yin was a true tonic.