Three days had passed, and Ivan had used the third Magic Stone Water, his mental power reaching 3.0 graduated degrees, which was the limit for a 1st Class apprentice.
"Indeed, there is an invisible barrier between 1st Class and 2nd Class—the checkpoint between levels, stronger than the previous one."
According to the information passed down by his mentor, the first two checkpoints were minor ones, relatively easy to break through; on the other hand, the checkpoint from 2nd to 3rd Class was significantly more challenging, which he needn't worry about for the time being.
He revisited the information in his mind and had his calculations ready.
Meditation runes and spiritual power complemented each other; higher spiritual power made it easier to delineate corresponding runes. Conversely, if the spiritual power hadn't reached a certain level, even a master of meditation runes couldn't delineate them all at once.