To Ye Qingchen's delight, once the Willow Wood Martial Soul and Dual Pupil Martial Soul had absorbed enough Spiritual Energy, they would in turn feed back a wisp of Pure Energy to enhance his Soul Power.
Soul Power was the energy required to sustain a Martial Soul. For an Alchemist like Ye Qingchen, it was also a tremendous supplement. Only with sufficiently powerful Soul Power could he attempt to reach higher realms of Alchemy.
Back at the Spirit Vein Vortex in Dragon Tiger Mountain, Ye Qingchen had absorbed enough energy to reach the peak of the Third Layer of the Martial Spirit Realm. After his recent training and the combat experience from the past few days, breaking through to the Fourth Layer was a natural progression. If not for his two Martial Souls absorbing a considerable amount of extra Spiritual Energy, he would have likely achieved this breakthrough even sooner.
