By the way, he can also practice his control over the Roc Fish.
Once the Roc Fish descended, the three of them followed closely.
Soon, they found themselves at the center of a large cave, which was actually a natural Stone Milk Cave. Inside, there weren't many stone milk formations, only three living pillars that produced spiritual milk.
The stone milk pillars are divided into living and dead pillars, and they're quite easy to distinguish. The pointy and well-defined ones are living pillars that can produce real stone milk, while the dead pillars are the irregular ones or not pointy enough, with an insufficient concentration of spiritual energy to restore spiritual energy levels.
They certainly don't form drops of milk.
Of course, stone milk also comes in grades.
Stone milk is further divided into Centennial Spiritual Milk, Thousand-Year Spiritual Milk, and Ten Thousand Year Spiritual Milk.
