Ling Yan quickly returned to his room in the body technique department and changed his clothes. Then, he arrived at the small courtyard in front of his house.

After meditating and closing his eyes for the time it takes to boil a cup of tea, Ling Yan opened his eyes. A bright glow appeared and he immediately exhaled a mouthful of impure air, his face brimming with vitality.

After thirty hours, two days, and three nights, his strength had unknowingly risen by so much. As expected of a special resource that could only be used by the 108 generals of the Crimson Nimbus Martial School.

Ling Yan whispered in his heart as he stretched out his right hand. The power of blood within his five fingers slightly moved, and faint traces of light yellow arcs of electricity appeared. They flickered like small yellow snakes, crackling and popping as they intertwined.

With a flick of his finger, the light-yellow electric snake on Ling Yan's five fingers disappeared in a flash, disappearing into a huge boulder about three meters away.

"Crack, crack, crack ~"

After an extremely soft sound, there was no more movement. Ling Yan watched this scene indifferently with a calm expression.

Suddenly, a gentle breeze blew past the huge rock. As if it had suffered an earth-shattering collision, it instantly disintegrated, shattering with a loud bang!

The huge rock immediately turned into tiny pieces of rock, rolling in all directions along with the wind.

Subsequently, all the blood vitality in Ling Yan's body stirred, and a faint yellow lightning ball appeared on his right palm with a crackling sound. The lightning ball was as big as a goose egg, and it contained an energy that made one's heart palpitate; with a light swing, the light yellow lightning ball instantly landed on a tree trunk that was ten zhang away.

BOOM!

With a loud bang, the entire tree suddenly exploded into pieces. Its entire body was scorched black!

This was the toughest ironwood. It would require a force of ten thousand jin to create such an effect, but the power of one strike of thunder was enough. One could see the terrifying destructive power of thunder.

The pale yellow power of thunder that he was currently grasping was something that not even a fourth level Mortal Core martial artist would be able to withstand.

The corners of Ling Yan's mouth curved up. This was the power of thunder! Not only could it affect the outside, it could also cause a powerful impact. It could also directly affect the inside of objects, causing terrifying damage! If this was used on a human's body, then if there wasn't a very good protection on the inside, then perhaps all of the meridians and organs within the body would be scorched into smithereens by the tyrannical power of thunder!

If he had the chance in the future, he would be able to upgrade the power of thunder in his body to the power of earth-step blue thunder. The power of heaven-step red thunder was even higher than the power of purple and black thunder.

Thinking of this, Ling Yan let out a long sigh of relief. The next time he had the chance, he would definitely go to the Lightning Extinction Array!

This time, Ling Yan was only able to reach the sixth level of strength, and was unable to endure it. Even with the [Berserk Golden Body Art] 's absorption and suppression, Ling Yan was still burned by that extremely strong numbing heat, and his entire body was in pain. His chest was stuffy, and he couldn't breathe.

If not for Ling Yan's timely return to Rank 5 strength, he would have been teleported out of the formation in less than 30 hours.

It was still a pity. If he could withstand the power of thunder at the sixth level of strength, then the pale yellow power of thunder in his body would have increased by another level, and its quality would be even closer to that of a middle Xuan realm.

If Ling Yan's thoughts were to be found out by the Crimson Nimbus Martial School's deacon, he would probably consider Ling Yan a freak.

The power of thunder at the sixth level of strength required a martial artist at the peak of the fifth level of the mortal realm or above to barely withstand it. Not just that, but under the comprehensive protection of true essence, a tiny bit of the power of thunder at the sixth level or higher was introduced to temper the power of thunder.