In the arena, the battle between Gu Ding and the tall man was still going on. Their states were clearly different. Gu Ding was getting stronger as he fought, while his opponent could only defend.

Gu Ding's storm-like attacks allowed Gu Ding to completely control the rhythm of the battle. It also overwhelmed his opponent, leaving him with only the strength to parry.

Gu Ding used the fifteenth, sixteenth, and eighteenth forms of Steel Fist. Phantom Kick also went from thirteenth to eighteenth forms. Even the close-range Thunder Elbow and Flaming Knee were used to the twelfth form.

The eighteenth form was the last form of Level 3. It had a 150% increase, but Gu Ding still felt that it was not enough.

Although continuous attacks could break through his opponent's defense, that was not the result Gu Ding wanted. In his opinion, breaking through his opponent's defense with one blow was the perfect result he wanted. Therefore, he kept forcing himself to unleash even stronger attacks.

After activating the last form of Level 3 Steel Fist, Gu Ding began to look up the contents of Ultimate Arts Level 4 Steel Fist in his mind.

Neptune did not want Gu Ding to be exposed to too much Ultimate Arts content too early because the technique was extremely damaging to the body. It accelerated the body's metabolism, and at the same time accelerated the aging and death of cells. He did not stop Gu Ding because they were in the Virtual Arena. Here, Gu Ding's body was just a pile of data. No matter how damaged it was, it would at most turn into nothingness. In the Virtual World, if Neptune wanted to, he could recreate Gu Ding's body in the blink of an eye.

However, Neptune was more worried that this was the Virtual Arena. Gu Ding's desire to win would overload his body. If he were to encounter a similar situation in the real world, he would probably overload his body too.

Gu Ding quickly memorized all of Ultimate Arts Level 4 in his mind. He blasted the first form of Level 4 at Tall Man.

He had a high understanding of martial arts, so the move was executed smoothly.

He then blasted the second and third forms one after another. Each blow was heavier than the last, and Tall Man's heart sank to the bottom. He had thought that his opponent would not be able to sustain such a heavy burden on the body for a long time. Although this body was virtual, it completely simulated a human's physical strength, endurance, perception, mental strength, and other information. This made Ge Gao, who was very confident in his physical strength and endurance, realize that he was probably going to lose this time. This was because he had gradually felt that his physical strength was severely depleted, and his mental strength that was connected to the arena was about to enter a state of exhaustion.

Gu Ding used Steel Fist all the way up to the sixth form of Level Four. His body was overloaded to the point where he felt like his hands could be crippled at any moment. However, in the Virtual Arena, the worst that could happen was that he would lose the battle. His body would reform once he got out of the ring, so Gu Ding was not worried at all. To him, winning or losing was no longer important. The most important thing was to break through himself.

Therefore, he used the first form of the fifth level, Steel Fist. When the powerful punch landed on Tall Guy's chest, Tall Guy's expression changed. Before he could react, his chest felt like it had been hit by a cannon. With a loud bang, his body flew backward.

Before he could stand up, his chest had collapsed. A moment later, he found himself standing outside the ring. He looked up at the young man in the ring. His entire right arm had been smashed to pieces by the recoil, but the young man was still standing in the ring. His eyes were calm, as if he had expected this outcome.

"Contestant Not Afraid of Cold Killer wins!" The arena system quickly announced the result of the battle.

"It's fine to use this kind of overload in the arena, but in the real world, you'd better not do such a stupid thing. Otherwise, your hand will really be crippled! " Although he knew that Gu Ding might not listen to him, he still had to say what he had to say. "Don't think that this kind of injury will be fine with the help of cell repair fluid. The cell repair fluid's ability to repair the body is based on accelerated metabolism. The more serious the injury, the faster the metabolism, and the shorter your life will be. "

In the monitoring room, the short-haired woman was slightly shocked when she saw the scene in the arena. She knew that Gu Ding would win, but she did not expect Gu Ding to win the battle in such a fierce way. She vaguely understood the purpose of Gu Ding's challenge in this ring.

"Ask him if he will continue to accept the challenge." The short-haired woman's lips curled up slightly. This time, there was no longer any provocation in her smile.

In the ring, Gu Ding's arm had completely regenerated, and a dialog box popped up in front of him. "Do you want to continue to accept the challenge?"

"Yes!" Gu Ding immediately made his choice without thinking.

"This time, your opponent is ranked in the top five thousand. He's not very strong, but his special ability is invisibility. Do you need my help?" Neptune asked.

Gu Ding shook his head slightly and moved his shoulders.

His opponent was quickly teleported into the ring. It was a thin man wrapped in a layer of black clothes. Apart from that, his face was covered with a black mask, and even his head was wrapped in a black turban. Only his eyes were exposed, and even his hands were wrapped in a pair of white cloths. Each of his hands was holding a dagger. His ID was "Invisible Tenderness".

Seeing this ID, Gu Ding secretly complained in his heart, 'It would be strange if anyone could see your tenderness when you're wrapped so tightly.'

"He's a professional assassin. Be careful, don't let him kill you in one hit," Neptune reminded him again.

In fact, when Gu Ding saw his opponent's outfit, he had a rough idea of who he was. After knowing Reid for a long time, he paid special attention to the details. His opponent's hands were wrapped, most likely because he was worried about leaving fingerprints when he was on a killing mission. He did not use gloves because they blocked the touch of the dagger from his palm. Although using a thin layer of cloth would affect the touch of the dagger, one could slowly get used to it after long-term training.

As for covering his body in black, it was to make it easier to move at night. Covering his face and hair was also to prevent unnecessary witnesses from seeing him and identifying him.

In reality, his opponent's identity was most likely an assassin. Such an opponent was extremely dangerous, and once he was caught, he would basically be killed in one hit. Those daggers were not to be trifled with. If he was stabbed in the throat or other vital points, he would definitely be eliminated on the spot.

Gu Ding also raised his guard, and the moment he made a judgment, he activated the defense of Righteous Body.

When his opponent saw Gu Ding, he did not attack immediately. It seemed that he was also analyzing his opponent. After a while, his figure gradually faded, and he completely disappeared from the ring.

"He's gone?!" Gu Ding was shocked. Although Neptune had warned him that his opponent could be invisible, he did not expect that there would be no trace of him.