C626 Xuanyuan Pavilion Master Duanmu Yun

The door of the room where the Xuanyuan Pavilion Master was in seclusion was made of titanium alloy. It had a soundproof effect and could withstand pressure. Even an expert at the Ninth Stage Early Period would not be able to break it with just his own fist.

Hua Butong pressed the doorbell beside him.

After waiting for about a minute