After Charles's cross-plane portal upgrade was completed.
Each of his cross-plane transmissions now cost only around fifteen thousand Magic Stones.
Compared to before, that was a huge saving.
Time continued to flow onward in this relatively tranquil state.
In the blink of an eye, two years had passed.
That day, Charles was teaching his students.
Just as he reached the most intense part of the lesson, a crow flapping its wings flew into the tower.
Around the crow's neck hung a faintly glowing rune seal—the passage seal for Charles's tower.
It was bound to the crow's life.
After being inspected by the guards, the crow entered the tower.
Charles, who was in the middle of teaching, stirred slightly. He said to his many students, "That will be all for today. Go back and study on your own."
The students had long grown accustomed to lessons ending so abruptly.
After all, Charles was a third-ring Grand Wizard, while they were only first-ring wizards.
Moreover, after more than two years of study, they already considered themselves very fortunate.
Although there were many students in the class, Charles also taught frequently.
Whenever these students spoke with other first-ring wizards from the same generation, a sense of happiness would always rise in their hearts.
For other first-ring wizards, it was already difficult enough for their third-ring Grand Wizard teachers to give one lesson a month.
Most lessons were taught by other veteran first-ring wizards, and the lucky ones might be taught by second-ring wizards.
How could they possibly compare with Charles, a third-ring wizard?
Charles gave lectures almost every one or two days. Not only did he teach, but he also helped his students resolve the difficulties they encountered in cultivation.
After the students left, a crow finally flew up.
Charles took out several