However, Huo Yuhao had been sitting for half a day, and Xuan Ziwen was quite satisfied with him. At least the boy was not impatient; he clearly understood the basic rules. With his spiritual power and clever wit, it shouldn't be too difficult for him to understand the core magic array of a level-9 Soul Guidance Device. This was a form of improvement for him.
Observing Huo Yuhao sitting motionless, it was fine for a while, but as time went on, Xuan Ziwen couldn't stand it any longer. He had barely slept last night, and now he felt really sleepy.
Thus, before he knew it, he had fallen asleep leaning against the lab table.
And he slept sweetly too. The Tang Sect Soul Guidance Hall was now fully on the right track, and all Xuan Ziwen needed to do was some of his own research, which was much more relaxed than before. But even though things were more relaxed, he still held himself to high standards. Something like sleeping during the day was a first for him in many years.