C47 Netherworld Udumbara Formation

"Plop, plop …"

Suddenly, the red transparent crystal in Yeh Wuyun's hand started to throb. There were nine bright holes around the crystal. They emitted a faint light that flashed and flickered as if it was breathing.

The crystal seemed to be a blood-red heart, but everyone discovered that their heartbeats suddenly resonated with the crystal.

Yeh Wuxie's eyes widened