Six thousand source experiences per day are definitely not difficult for Wang Kai, who is a powerful soul saint. It can be completed by hunting about a thousand thousand-year-old soul beasts. If it were ten thousand-year-old soul beasts, the number would be smaller.

Of course, Wang Kai would never be satisfied with only obtaining 6,000 source experience every day, but would hunt with all his might. After all, the sooner Wang Kai advanced to Conqueror, the sooner he could start completing the world martial arts mission. Interfering in the Douluo Continent form, the greater the help to Wang Kai's advancement and growth.

"However, before starting hunting, let's get the two outer soul bones done first. They are stronger and more efficient in hunting!"

With a thought, Wang Kai also entered the small plane.

After passing the Hell Road, Wang Kai's source points reached more than 14,000 points. If Wang Kai hopes, he can even directly exchange for an additional divine martial soul. However, compared with the divine martial soul, exchange for external soul bones will obviously improve Wang Kai's strength.

"System, exchange for a piece of 'Taixu Thunder Dragon Wings'!"

With a thought, Wang Kai ordered coldly.

"It costs 5,500 points to exchange for a piece of 'Taixu Thunder Dragon Wings'. Is it redeemed?"

With Wang Kai's thoughts, the system's prompt sound came.

"Of course, exchange!"

As Wang Kai said and deducted points, waves of silver light flashed in front of Wang Kai, forming a pair of silver wings, which looked extremely gorgeous, but also contained terrifying energy, making people feel like the soul trembling when they looked.

Compared with ordinary soul bones, the external soul bone is ten times more expensive, not to mention the external soul bones on the 100,000-year-old soul beast. However, its benefits are also obvious. Once ordinary soul bones are exchanged, they must spend a lot of points to help them grow. The external soul bones can grow naturally with the growth of the soul master, and at the same time improve the physical fitness of the soul master.

"Then, Taixu Thunder Dragon Wings, let me merge!"

As Wang Kai whispered, vigorous soul power surged out of Wang Kai's body, wrapping up the wings of the Taixu Thunder Dragon in front of him. Then, Wang Kai began to have a special connection with him.

There is not much difference between the process of fusing external soul bones and the process of fusing ordinary soul bones. The only difference is that during the process of fusing external soul bones, there are more cold flows flowing into the body. However, for Wang Kai, these are not a problem at all.

After several hours of cold flowing baptism, Wang Kai also had a mysterious connection with the Taixu Thunder Dragon Wings in front of him. Immediately afterwards, accompanied by eighty-one dull buzzing sounds, the Taixu Thunder Dragon Wings in front of Wang Kai also turned into a silver light and merged into Wang Kai's body.

Suddenly, a stream of vigorous evolutionary power surged out from the deepest part of the body, and the number was so large that it was even inferior to the fusion of the Divine Martial Soul, far surpassing the gains of the fusion of ordinary soul bones and soul rings.

A few hours later.

"Very good! My strength has improved again!"

After refining the Wings of the Taixu Thunder Dragon, a large amount of evolutionary power also brought Wang Kai's body a new transformation, all attributes were greatly improved, and the degree of soul power crystallization was also increased to 32%, and his strength was closer to the title Douluo power.

If Wang Kai's strength was only able to compete with the weakest Titled Douluo, then now, Wang Kai's strength can already defeat Titled Douluo's strong man. Of course, for Bibidong, who has twin martial souls, 100,000-year soul skills and extremely solid realm, Wang Kai's current strength is still very different.

In addition, after fusing an external soul bone, the Taixu Thunder Dragon Soul Bone Set also evolved.

In the past, the Taixu Thunder Dragon Transformation included in the Taixu Thunder Dragon Soul Bone Set could make Wang Kai comparable to ordinary 91-level titled Douluo Power, but it can only last for fifteen minutes each time. However, after obtaining an external soul bone, the Taixu Thunder Dragon Transformation could make Wang Kai comparable to ordinary 92-level titled Douluo Power Power, with the duration extended to thirty minutes, and the charging time was shortened to ten and a half days.

In addition, after fusing the external soul bone of the Taixu Thunder Dragon Wing, Wang Kai also obtained a new skill - Taixu Ten Thousand Blades Thunder Feather. Through soul power, Taixu Thunder Feather condenses Taixu Thunder Feather on the Taixu Thunder Dragon Wing, and launches in all directions, making powerful cuts on all enemies in the range, and eventually explodes. It is a very powerful range soul skill.

"Very good, keep integrating!"

Whether it was the increase in strength or the evolution of the Taixu Thunder Dragon Transformation, Wang Kai was very satisfied. Immediately, Wang Kai began to merge with the second external soul bone in the Taixu Thunder Dragon Soul Bone Set - the Tail of the Taixu Thunder Dragon.

Like the Wings of the Taixu Thunder Dragon, as an external soul bone, the price of the Tail of the Taixu Thunder Dragon is also 5,500 source points. However, after seeing the powerful effect of the Wings of the Taixu Thunder Dragon, Wang Kai exchanged it without hesitation, and his source points were reduced to less than 4,000 points.

As the points disappeared, a silver light flashed in front of Wang Kai. Then, a silver bone that was one meter long and emitting terrible energy appeared in Wang Kai's hands like a long whip.

"This is the tail of the Taixu Thunder Dragon, right? Fusion to me!"

Looking at the outer soul bone in front of him that emitted strong energy fluctuations, Wang Kai also showed a burning look in his eyes, and then activated his soul power!

......

A few hours later.

"Very good! My strength has gone to a higher level!"

After completing the fusion of the soul bones attached to the tail of the Taixu Thunder Dragon, feeling the vigorous power of the whole body, Wang Kai also smiled faintly and stood up.

After fusing the soul bone outside the tail of the Taixu Thunder Dragon, Wang Kai's total attributes increased by 15%, and the level of the soul power crystal also increased by 1% again, reaching 34%.

Twenty percent of all attributes does not seem to be a lot, but don’t forget that after advancing to the Soul Saint and fusing so many soul bones and soul rings, Wang Kai’s strength has long since changed from before. It is already very terrifying to improve by fifteen percent.

After fusing the soul bones, Wang Kai naturally obtained a new skill called the Taixu Thunder Dragon Whip, which swung the tail of the Taixu Thunder Dragon to slap the enemy, causing massive damage.

At the same time, after obtaining the last piece of external soul bone, the Taixu Thunder Dragon Transformation also evolved again. The power during activation reached the power of the ordinary 93-level titled Douluo, the duration reached one hour, and the cooling time was reduced to one week.
Chapter completed!