He had obtained this key when he had been in the outermost circle. He had obtained it through the desert, after the Sand Maidens had recognized him as their Master.
Before this, he had absolutely no idea what this key was used for, but standing in front of the main doors, he suddenly came to a realization.
Just now, he had deliberately teased Song Lan. His purpose was naturally to anger her into leaving, because once she left, the others would definitely leave as well. That way, he would be able to calmly open the door and enter alone.4
Otherwise, those people had basically advanced into the Core Formation Tier by now, and their battle prowess was not inferior to his. In fact, Song Lan was probably even superior to him. Would Ling Han be able to stop these people from entering the palace together with him?
He took a deep breath, took the key, and leaned towards the keyhole.