C140 On End of Field Test

In a certain location in the Yunluo Mountain forest, Ye Han was slowly refining the wood essence within his body.

This place was extremely secluded. Not to mention humans, even Demonic Beast rarely came here, so Ye Han was very relieved.

After a day and night of refinement, Ye Han had already refined twenty to thirty percent of the wood essence.

Wood essence was, after all