He rested for ten minutes and drank two cups of water. He felt very tired, and even after using cleaning magic and recovery spells on himself, he still felt uncomfortable and didn't want to start the next hour of practice.
However, as soon as the time came, he immediately resumed training.
The magic card automatically marked the diagram on the wall, indicating which points of the practice he had completed. Completed points were marked with green dots, and uncompleted ones with red dots. Now, the entire diagram with over twenty thousand dots was almost entirely red, making him feel very tired mentally.
He continued to try. He formed four energy balls in the extraordinary circuit and then merged them into one.
His speed hadn't increased, nor did he feel that he had mastered any techniques. The thought kept popping into his head, I'm so tired, so annoyed, I really want to stop.