C182 Hei Bao and Little White Advanced to the Sixth Rank of the Giant Dragon

Four hours had elapsed, and Zhang Xing had completed all the lessons for Intermediate Mages.

He deactivated the protective shield and returned the book to the shelf.

As the students filed out, returning their library cards, Mo Er watched Zhang Xing leave with a complex look in his eyes.

The boy had sustained his focus for two solid hours without a hint of fatigue