As the top Sage Clan in the Master Teacher Continent, the Zhang Clan had many offspring in the Sanctum of Sages. As long as they were not the core members of the Zhang Clan, it would not cause too much of an uproar to harm them. However, within less than a single day, Zhang Xuan had pummeled three of them. While they were all the less important inner members, that could still be considered an act of provocation toward the Zhang Clan!
He might still have been able to make some actions in the shadows to mediate the conflict between both parties had it been any other power, but as for the Zhang Clan… it was a power that was not much weaker than the Sanctum of Sages, and he was only an ordinary teacher in it.
If Zhang Xuan really incurred the ire of the Zhang Clan, and the latter sent some of their more formidable offspring at him, there would be nothing he could do at all.