The secret technique that Chen Lei performed was called the Green Fire Soul Burning Technique.
This Green Fire Soul Burning Technique can ignite the original spirit, thereby releasing extremely terrifying power, instantly increasing the strength of the caster by dozens or hundreds of times.
The extent of the improvement in strength depends entirely on the strength of the caster's soul.
In this strange world, after absorbing the rune energy from the crystal, Chen Lei's soul became dozens of times more refined and extremely powerful.
At this moment, using the secret technique of Green Fire Soul Burning Technique can be said to have caused Chen Lei's aura to surge wildly, which is much more terrifying than using the critical strike rune.
Of course, this Green Fire Soul Burning Technique is too overbearing. It directly burns the soul. After performing this technique, it will probably take a long time to restore the burned soul.
However, the critical strike rune does not have this flaw at all. Once the cooling time is over, it can be used at any time without any sequelae.
But now, Chen Lei is unable to cast the critical strike rune at all, because once he casts it and is seen by Leng Ningshuang, his identity might be exposed.
Therefore, Chen Lei had no choice but to use the Green Fire Soul Burning Technique, which had serious side effects.
However, the power of the Green Fire Soul Burning Technique was indeed extremely terrifying. When it was performed at this moment, Chen Lei felt as if he was omnipotent. His body was filled with endless power, as if he was possessed by a god.
Taking advantage of this opportunity, Chen Lei rushed towards Zhang Wei without hesitation. He blasted out with the Supreme Wood Emperor Fist, and the divine light surged a hundred times as he killed him with all his strength.
At this time, Zhang Wei also mastered the secret technique and his strength increased dramatically. Naturally, he was fearless and fought directly with Chen Lei.
In the battle between the two men, every move was incredibly powerful, as if it could destroy the world.
In the distance, Leng Ningshuang retreated again and again, and had already retreated more than 100,000 miles. Even though she was at such a long distance, Leng Ningshuang still felt the tremendous pressure that made her almost breathless.
The battle between these two people was really too amazing.
On the battlefield, dust and smoke were rising, and the sky was filled with talismanic lights. Countless mountains collapsed, and the area within a hundred thousand miles was affected by the power of the fight between the two men. It was razed to the ground and turned into ruins.
After hundreds of moves, Zhang Wei's aura suddenly dropped sharply, and the time for his secret technique to last was up.
But when the secret technique lost its effect, Zhang Wei suddenly became extremely weak.
At this time, Chen Lei's secret technique was still effective. The reason why it could last for such a long time was naturally because Chen Lei's soul was extremely powerful.
Taking advantage of this opportunity, Chen Lei slapped Zhang Wei, turning him into a ball of blood.
Chen Lei was still maintaining his secret technique at this time. His strength was so strong that he could almost smash a star with one palm. No matter how strong Zhang Wei was, he could not withstand such a slap.
After Zhang Wei was directly shocked into a bloody mist, Zhang Wei's Nascent Soul flew out immediately, trying to escape.
Unfortunately, Chen Lei's secret technique had not been cancelled at this time. His speed was beyond imagination. He instantly sealed Zhang Wei's Nascent Soul that wanted to escape and took it away.
After sealing Zhang Wei's Nascent Soul, Chen Lei directly withdrew the secret technique.
When Chen Lei withdrew the secret technique, he immediately felt weak. Nearly one tenth of his spiritual power was consumed.