After Lin Xuan practiced Iron Fist to the level of invincibility, his master Iron Fist Martial Saint also appeared. Only then did Wu Yi know that Iron Fist Martial Saint was actually the reincarnation of the undefeated Martial Saint. The Undefeated Martial Saint is an unparalleled warrior. He does not borrow any external force, just a pair of iron fists is enough to reach the realm of half-step supremacy. In the ancient war, his martial spirit was immortal. Although his body fell, he was still reincarnated into the world of kung fu. Relying on his undying martial spirit, the undefeated Martial Saint successfully made a comeback, still defeating invincible opponents in the world with a pair of iron fists. The Undefeated Martial Saint has always been consistent. After reaching the peak of the Heavenly Realm, he has not been looking for a supreme artifact that matches its attributes to break through to the Supreme Realm. Instead, he has continued to study martial arts and wants to use the Iron Fist. Cultivate a skill to level 1,000 to break through to the supreme realm. After the Holy Sword Incarnation reached level 1,000 in the basic skill of sword mastery, it relied on this skill to successfully integrate the star sword wings and reach the supreme realm. The undefeated Martial Saint wants to cultivate the first-level skill of Iron Fist to level 1,000, and also wants to use this skill to reach the supreme realm. After all, first-level skills are more powerful than basic skills. If they are cultivated to level 1,000, it is really possible to help the undefeated martial saint achieve his goal. But its training is far more difficult than mastery of swordsmanship. The Undefeated Martial Saint has the previous foundation and has practiced Iron Fist to the level of 900, but it is extremely difficult to break through again. So the undefeated Martial Saint found another way. He actually wanted to take Lin Xuan with him from the colorful light curtain into the dark universe, putting himself to death to force himself to break through the realm. The skill of Iron Fist is also the skill that needs to be upgraded through endless battles. The Undefeated Martial Saint was able to upgrade it to level 900 before, after fighting countless extraterrestrial demons, and in countless life-and-death battles. Enlightenment. Wu Yi also wanted to dissuade the undefeated Martial Saint from such risky behavior, but in the end he did not stop him. In an emergency, he did an extraordinary thing, and Wu Yi finally let the Demon Lord incarnate and preside over the Dark Demon Tower, integrating the Undefeated Martial Saint and Lin Xuan into the dark universe. Before entering the dark universe, Wu Yi transformed the Undefeated Martial Saint into his apostle. He was also allowed to return to the Star Wars Temple, so that he could also use the power of the Soul Furnace to refine the extraterrestrial Yin Demon. The Undefeated Martial Saint's use of the soul furnace is only to deal with the immortality of the soul of the demon outside the territory, so as not to be entangled by it. He actually sealed up the soul power of the Yin Demon Queen from outside the realm, and never used any external force to increase his own power! The unwavering martial arts spirit of the Undefeated Martial Saint is also the main reason that enabled him to reach his current state. Lin Xuan also began to learn from the Undefeated Martial Saint and blaze his own path purely with a pair of iron fists. Entering the dark universe with the two of them, there are also Wu Yi's shadow incarnation and madman. The shadow incarnation has killed countless dark monsters and extraterrestrial demons in the bottomless abyss, and its assassination and life-saving abilities have been proven. . Wu Yi let the shadow avatar enter the dark universe not only to ensure the safety of the undefeated Wu Sheng and Lin Xuan, but also to rescue them at the critical moment. To a certain extent, it was also to allow him to detect the information in the dark universe. The Dark Universe has invaded many universes. In these universe eras, it has always been a feared existence, and countless people have fought against it. But among all the records, there is indeed very little understanding and relevant information about the dark universe. That is because very few people will enter the dark universe. The dark universe is the home of the demons outside the territory. Once creatures of other races enter the dark universe, they are like fireflies in the darkness. You will be besieged by countless demons from outside the territory. Fighting alone in the dark universe, what you are facing are terrifying creatures with immortal souls like the alien demons. Even the immortal God King will fall sooner or later. Being beaten to death by force. There were also peerless experts who tried to enter the dark universe to investigate their situation, but in the end there was no news. They were either surrounded and killed, or parasitically possessed by demons from outside the territory, and the information transmitted back was also wrong. This means that in many cosmic eras, the understanding of the dark universe has always been half-understood. There is no information about how vast the dark universe is, whether there are other races besides the extraterrestrial demons, etc. The shadow incarnates and enters the dark universe. While assassinating the peerless experts, it can also explore various information about the dark universe so that Wu Yi can make targeted arrangements. The shadow incarnation can use the power of the soul furnace and can escape at any time. It is the best candidate to spy on the news. The reason why a madman follows?Their entry into the dark universe together is related to the pair of demonic hands of the madman. These demonic hands came from the Bloodthirsty Demon God, but in fact, the Bloodthirsty Demonic God was not the original owner of these demonic hands. After his strength was raised to the level of the Holy Grade, the madman had already discovered the strangeness of the pair of demonic hands. They came from a supreme strongman, and this supreme strongman combined a pair of supreme artifact-level weapons. The sharp claws are integrated into the body and raised to the supreme state. Later, after the death of this supreme powerhouse, a pair of his arms were left behind. They survived countless calamities and were acquired by the bloodthirsty demon. Relying on the hands of these demons, the bloodthirsty demon god has become one of the most powerful ones among the ancient demon gods. This pair of demonic hands can also be considered as a supreme artifact. The madman was able to obtain these pair of demonic hands only by chance. The faster the madman's strength improves, the more powerful he discovers the power of the pair of demonic hands. After the degree of compatibility increases, the madman discovers that in order for the demonic hands to show their full power, they need to enter the dark universe. The fall of the supreme strongman with the hands of the devil is closely related to the dark universe. The madman senses that there is a force attracting him in the dark universe, so the madman enters the dark universe together. When the four of them entered the dark universe together, Wu Yi found that their connection with him was almost severed. Wu Yi could only vaguely sense that the shadow incarnation had entered a world full of dark evil energy. The environment in the dark universe is very extreme, and its interior is filled with dark evil energy, which is only suitable for the survival of dark monsters and extraterrestrial demons. In the dark universe, dark monsters are creatures without much sense. They only know destruction and destruction, and live in a wilderness without civilization. (~^~)