As Su Changqing's words fell, the purple-robed immortal's expression shifted unpredictably, filled with immense apprehension.

He never imagined that one day he would be threatened by a junior at the Emperor Realm.

The key issue was that Su Changqing truly possessed the power to threaten him.

Although he wanted to refuse Su Changqing, he found himself unable to open his mouth to reject him. After all, that door was terrifying beyond measure. Behind the pitch-black door, though seemingly empty, he could sense an overwhelming terror.