Previously, Dong Lei had plundered all of Evil Ding Dian's skills after killing him.
Through his skills, he discovered the reason why this Ding Dian could stay in water for so long.
He also upgraded the Evil Illumination Scripture and Flying Wolf Demon Concealment to Lv10.
The Level 10 Evil Illumination Scripture could hold his breath for up to 20 minutes, which was equivalent to 20 minutes of staying in water.
The area within ten meters of the Level 10 Flying Wolf Demon Concealment was filled with a large amount of demonic energy, blocking his position.
In the demonic aura, Dong Lei could see the existence of others.
And the enemy had no way of discovering his location.
In Dong Lei's opinion, this Flying Wolf Demon Concealment skill was still very good.
Once he was in danger, he would use this Flying Wolf Demon Concealment so that he could hide and not be discovered by the enemy.