C578 Hard Pebbles

Upon entering, Zhang Xuan didn't find anything out of the ordinary. It was as blank as the room from before.

Seeing Fire Phoenix rummaging through the cabinets looking for something, Wendu also helped to look for something.

However, he didn't find anything different.

"Found it!" Fire Phoenix exclaimed in surprise.

In her hand, she held a small stone.

The surface of the rock was very smooth