Once the purple veins entered his mouth, they quickly took effect.
The blood and qi throughout Liu Yu's body began to surge and boil. A layer of medicinal power coated his meridians, protecting them, while his physical strength temporarily increased a little.
Then a torrent of spiritual energy poured in from outside the cave abode, entering Liu Yu's body and cleansing and strengthening it inside and out.
For cultivators who had missed the ideal age for Foundation Establishment, this stage was the most perilous. Their blood and qi had declined, and their bodies had aged. Their flesh might fail to withstand such vast amounts of spiritual energy and burst apart like a balloon inflated to its limit.
As time passed, Liu Yu's pores slowly expelled grayish-black substances that gave off a powerful stench. His already fair skin began to turn pristine white, his features became less ordinary, and the very essence of his life began to transform.
After seven days and seven nights, the surging spiritual energy gradually dissipated. Before Liu Yu could examine his condition, a sudden, agonizing pain tore through his primordial spirit. His vision went black, and he collapsed onto the meditation cushion.
He had no idea how much time passed. Perhaps it was two hours; perhaps it was several days and nights.
Liu Yu woke and discovered, to his delight, that he had completed his advancement while unconscious and entered the Foundation Establishment Realm.
Springing up from the ground, Liu Yu explored the changes brought by the Foundation Establishment Realm.
First, his dantian was filled with liquid spiritual power. Its intrinsic quality far surpassed that of gaseous spiritual power, by more than tenfold. A single portion equaled ten portions of his former power. Whether he wielded magical artifacts or cast spells, their might far exceeded what