Shen Lang wasn't afraid of others finding out about these things.
If he were truly afraid, he wouldn't be carrying the Immortal Celestial Saber on his back.
This included coming to the Profound Dao Sect. He just wanted to keep a low profile and avoid trouble as much as possible; it wasn't that he was afraid of anything.
Revealing the Immortal Celestial Saber's power wasn't his intention, but back at Wuling Creek, he'd had no choice if he wanted to deal with the people from the Beast Emperor Palace.
Carrying his Lifebound Magical Treasure on his back instead of storing it in his Sumeru Ring was, in fact, a form of cultivation.
Only through constant, prolonged contact with his body could the Immortal Celestial Saber merge with him more quickly, more stably, and ultimately fall under his complete control.
Whether a Magical Treasure Secret Artifact had an Artifact Spirit or not, it still possessed a spirit of its own.
