252 Upgrade 

Gu Changqing didn't speak; he just calmly looked at them.

A moment later, the gray mark on his right hand dimmed, and the restraints on Zhang Hu and the others were lifted. To them, they still needed time to completely fuse the new divine rune.

Sensing the powerful divine rune energy that was fitting to them surging within their bodies, they were both moved and excited.

The Time Box fell silent. Everyone seemed to be in an endless state of stillness except for their breathing and movements.

Gu Changqing also sat down and closed his eyes to regulate his breathing.