The third and fourth main veins had been refined.
Xiao Yi immediately activated the Ice Phoenix Sword Soul and Fire Control Beast Soul within his body, absorbing the Heaven and Earth Spiritual Energy.
The surging waves of Spiritual Energy rushed forth, rapidly filling the newly refined two main veins.
After nearly half an hour, the third and fourth main veins were filled with Spiritual Energy, signifying that he had completely stabilized his Cultivation and reached the Postnatal Fourth Layer.
In the practice of the Postnatal Realm, the most difficult part was to refine the main veins. The impurities clogged the main veins severely, requiring an immense amount of True Qi to impact and cleanse them.
According to the normal daily practice speed of a Martial Artist, it would take at least several years or even longer to fully cleanse a main vein.
