C369 Black Wave

A small river flowed in front of him, but Lin Sen still didn't see a bat or a snake. This valley was terrifyingly quiet, and he could not hear a single bird's cry. He also couldn't hear a single insect cry, so he observed it carefully. There were traces of animal activity by the river, but he could not see anything at this moment. Even if it was not an ant, the river water was clear. However