Zhang Chengjing released his hand and backed away to the side of the door.
At this moment, Shi Yanan opened the door from outside. Yan Junze and Zhang Chengjing walked out one after another, and Shi Yanan immediately closed the door again.
The Black Spirit Umbrella still stood erect in the isolation room, swaying slightly but not as violently as before. At this moment, the magnetic field in the entire room had reached its peak, and even standing outside the isolation room, one could hear the buzzing sound.
The surface of the umbrella occasionally bulged and then collapsed, repeating this action. After about ten minutes, it finally began to slowly subside.
Five minutes later, Zhang Chengjing looked back at Wan Shouguang and signaled him to turn off the magnetic field stabilizer.
The buzzing sound disappeared instantly, and the Black Spirit Umbrella that had been standing in the isolation room fell over uncontrollably and ceased all movement.