The Pit of Heavenly Origins was located beneath Jiuyou Tower. This was precisely why the Heaven and Earth Force within the tower was exceptionally abundant.
For a cultivator, Jiuyou Tower was the most desirable place because it quickened one's cultivation speed. However, it was the exact opposite for a fiend.
The Pit of Heavenly Origins was a natural vault for force. It contained an extremely dense amount of Heaven and Earth Force, but it was also mixed with many impurities. Inhaling an excess amount would harm the cultivator's body, damaging their Yuan meridian in mild cases. For the more severe cases, it could be life-threatening.
A cultivator could discharge these impurities in their bodies through various means, but fiends couldn't. Besides, most fiends were cruel and fierce by nature. The Pit of Heavenly Origins had a great impact on them. If they stayed too long, they might lose their minds and eventually go berserk or even self-implode and die.
