Chapter 210: Closed-door Cultivation in the Mountain Cave

“Boom!”

A deep thunder-like roar sounded out from Lin Dong’s body, and lightning covered his body like a hedgehog’s spines. As the lightning power tempered his body, the bronze hue on his skin became increasingly richer.

The lightning power contained within the thunder source was extremely vigorous. Thankfully, Lin Dong had absorbed a fair amount of lightning power over this period of time. Hence, he was already somewhat used to this savage force, and his current condition was not considered bad. At the very least, there were no signs of something going wrong.

The lightning glow illuminated Lin Dong’s solemn face, which appeared exceptionally serious. Of course, the current situation inside his body was not as calm as it seemed on the surface. Vigorous lightning power flooded through his channels, bringing with it a searing heat that caused all of his channels to burn in pain.

However, this magnitude of pain was nothing...