North City Immortal Sect.
Ye Tian also wanted to quickly finish making the Magical Treasure for his junior apprentice sister, but was called away by his master, who said he had to make a Magic Artifact for a familiar friend.
Ye Tian's master, being only at the Golden Core Stage, logically speaking, as a Golden Core Elder and Artifact Refining master, should create Magical Treasures superior to those of a disciple.
Otherwise, how could he call himself a master?
This was actually a source of frustration for Ye Tian's master: as a master Mage in refining artifacts, the Magical Treasures he crafted were not as powerful in attack and defense as those made by his disciple.
His old friend even insisted that it had to be his disciple to refine the Magic Artifact for him.