After leaving the attribute enhancement hall, Shen Xu did not immediately go to the arena, and after identifying the direction, he walked towards the skill upgrade hall.

There is not much difference between the skill upgrade hall and the attribute enhancement hall, and it is also a building that soars into the sky, covering a huge area.

Entering the skill upgrade hall, under the leadership of the enforcer, Shen Xu came to an upgrade room, and there was only a huge virtual screen in the upgrade room, and the rest was empty.

[You are using room numbered 201314, and it is detected that the contractor is using a skill to upgrade the room for the first time, and there is no charge, and you will need to pay a service fee of 500 Dream Bonds for each subsequent use.] 】

Please select the skill you want to upgrade. 】

The huge virtual screen directly shows the three skills that Shen Xu now has, and the fear aura has reached LV.MAX, commonly known as the full level, so it is gray on the screen, which means that it cannot be upgraded.

He could only upgrade the Bloodthirsty Slash and the foundation of swordsmanship, and Shen Xu pointed his hand on the foundation of swordsmanship.

[Do you want to upgrade the foundation of swordsmanship?] Each level level costs 1,000 Dream Bonds, and additional rewards will be unlocked when you reach level 10. 】

[You have successfully upgraded the basic swordsmanship, and the current basic level of swordsmanship is LV.2, increasing the swordsmanship attack power by 7%. 】

......

[You have upgraded the basic swordsmanship, and now the basic level of swordsmanship is LV.5, increasing the swordsmanship attack power by 15%. 】

After spending 5,000 Dream Bonds, Shen Xu upgraded the swordsmanship foundation to level five in one go, increasing the swordsmanship attack power by 2% for each level.

After hesitating for a moment, he didn't continue to upgrade his swordsmanship foundation, he still had 18920 Dream Bonds, the amount of Bloodthirsty Slash skill upgrade was unknown, and he had to leave at least a little guarantee.

[Do you want to upgrade the Bloodthirsty Slash?] Each level level costs 3,000 Dream Bonds, and additional rewards will be unlocked when you reach level 10. 】

“3000？ Why don't you grab it? Shen Xu muttered secretly, but after thinking about it, he was relieved again.

Unless someone else explodes in the first world, it is impossible to obtain the blue skill scroll, and he can get it entirely because he went to die, no, he got it desperately!

Shen Xu canceled the upgrade interface of the Bloodthirsty Slash, although he said that he could get additional rewards by reaching level ten, but it was impossible for him to upgrade the Bloodthirsty Slash to level ten, there was no money!

Shen Xu once again spent 5,000 Dream Bonds to upgrade the swordsmanship foundation to level 10, and the Dream Space gave a hint.

[You have successfully upgraded the basic swordsmanship, and the current basic level of swordsmanship is LV.10, increasing the swordsmanship attack by 25%.] 】

[Your skill (Sword Basics) has been upgraded to LV.10 to receive additional rewards, please choose one of the following options.] 】

1. Increase swordsmanship attack by 5%.

2. Increase the toughness of sword weapons by 1.

3. Increase the attack power of the sword weapon held by 1 point.

Choosing one of the three, Shen Xu finally chose the first one, and his sword attack increased by 30%.

A ball of light melted into his body, and his mind seemed to suddenly have countless knowledge about swordsmanship, he picked up the sword of the hurricane, and a mysterious feeling appeared, he was like an old master who had been immersed in swordsmanship for countless years, and the skills of swordsmanship had long been imprinted in his life.

This feeling is wonderful!

He still has 13920 Dream Bonds left, and in terms of skills, he doesn't plan to upgrade, what he must do now is to master the strength of the skyrocket. The best place to be, of course, is the Arena!

The arena was on the edge of the central circle of the Dream Space, and he had to go through the proving ground to get to the arena, so he didn't delay and rushed all the way to the arena.

However, when he was about to enter the arena, he was stopped by the enforcers, and the hint given by the Dream Space was that the arena was escalating.

In vain, Shen Xu could only go back to the trial ground, and according to the reminder of the law enforcer, the trial ground could also fight.

[You have entered the Proving Ground, please pay the 1000 Dream Bond Challenge Fee.] 】

[Because you entered the Proving Ground for the first time, you are explaining the rules of the Proving Ground to the contractor.] 】

Proving Ground: Randomly select an opponent that matches the contractor's strength based on the derivative world (at least one) the contractor has experienced.

The Proving Ground is also known as the Trial Tower, each room is a Trial Tower, each Trial Tower has a total of 10 floors, and each successful challenge is a streak. There are corresponding rewards when you reach 3 consecutive wins, 6 consecutive wins, and 10 consecutive wins.

If you quit or fail once, it will be judged as a losing streak, and you can re-challenge or break the challenge.

The second challenge costs 1,000 Dream Coupons, the second re-challenge costs 2,000 Dream Coupons, the third time costs 4,000 Dream Coupons, and so on.

You can consume one Soul Crystal (small) for a Breakpoint Challenge, the second Breakpoint Challenge requires a Soul Crystal (Small) ×2, the third Soul Crystal (Small) × 4, and so on.

Three wins in a row, you can choose any skill level +1 if you win six in a row (MAX cannot be upgraded), and you can choose rare rewards when you win ten in a row.

Note: Every time a derivative world ends, the Proving Ground characters will be refreshed.

Shen Xu paid a 1,000 Dream Bond Challenge Fee to enter the trial room, which is the trial tower.

[The payment is successful, and the scene is being assigned to you.] 】

[Detected that the contractor has a soul crystal (small), whether to consume a soul crystal (small) for the designated trial scene, there are five maps in the scene, tropical, rainforest, desert, swamp, island.] 】

Shen Xu's head was full of black lines, and he only had one soul crystal (small), so it was naturally impossible to use it in this kind of place.

However, after this time, he also learned about the role of soul crystals in the dream space, which is a high-level and precious resource.

Shen Xu directly chose no, the scene was random, and the final scene fell on the island.

The scene in front of Shen Xu changed, it was no longer a cold and empty room, but a spacious island, Shen Xu stood on the island, he reached out and touched the fine sand under his feet, the touch was very real, and the air was filled with a faint smell of sea.

This is much stronger than any 5D scene, no, it's a block!

Soon, in front of Shen Xu, a person appeared, and this person was the leader of the thieves he had defeated in the previous derivative world, Rebuqi.

"Aha, we're meeting again, you damn bastard!" Rebucci shouted.

"You know me?" Shen Xu was a little stunned, this should be a virtual mirror, how can he still retain his thoughts?

"I know you all when you turn to ashes, you killed all my brothers, and I am the only one left alive, and I will avenge them for whatever I say today!!"

Shen Xu didn't speak, he was basically sure that the virtual mirror image conjured up by the dream-making space would retain their memories, but the key memories had been tampered with.

For example, Rebqi, in the clover world, Shen Xu has already killed him, but at this moment, Rebqi thinks that he is not dead, and he is the only one left.

(Brothers, sisters, Fei'er has issued a new book, but in the past few days, our new book has not achieved satisfactory results, and the results are not satisfactory because there is no support from you, so the brothers who fought together before, now the book is still a seedling, you can raise it first, give a collection, give a recommendation, if you can invest in a new book, thank you for your loyal Fei'er here!! ）