The Divine Realm had two great lands teeming with spirit medicines. One of them was naturally the Immemorial Medicine Garden, while the other was the Holy City's Bloodrain Wilderness.
Different from the Immemorial Medicine Garden's once every 500 years opening, the Bloodrain Wilderness was the private property of the Holy City and the Alchemist Association.
If they wanted to go in, they could do so at anytime.
The Bloodrain Wilderness was a mystic realm. The entrance was inside the Heavenly Saint Pagoda. Bystanders were completely unable to enter.
Of course, the Bloodrain Wilderness was similarly very dangerous. Inside was the playground of desolate beasts.
It was precisely because so that the Bloodrain Wilderness had always been the place where the Holy City trained the disciples under them.
However, the Bloodrain Wilderness had a total of seven levels. Each level was more dangerous than the other.