Of course David was just kidding.
"Maybe my approach is wrong," David muttered, after trying for so long and not getting any results.
He decided to review his life from the point he started to cultivate and until today.
What he was most familiar with was Purple Thunder.
Even though his memory was a bit fuzzy, David still remembered one or two things about how lightning works but that was very bookish knowledge.
"In cumulonimbus clouds, water droplets and ice crystals collide, generating static electricity," David muttered what he still remembered in a low voice.
He felt nothing.
Knowing something is not understanding.
He needed to understand the very essence of thunder.
With these thoughts, David threw a couple of Enlightenment pills into his mouth and once again focused.
He activated the Purple Thunder technique to help him better visualize its nature.