C539 The Fourth Trial the Book Cave!

Seven days later.

In the middle of a chaotic boulder.

Ah!

A series of miserable screams echoed in this area.

After about seven to eight breaths, the screams gradually weakened until they disappeared.

Jiang Dao casually threw away the two Spirit Corpse in his hands and frowned.

"It's been seven days. The number of Spirit Corpse and undying creatures I've encountered has been decreasing