The serum studied by Dr. Erskine is very powerful, it can strengthen ordinary people to the limit of human beings, but it also has a fatal flaw, it will make good people more good, and evil people more evil.

Nowadays, who does not have a little evil thought in his heart, even Li Chenglong does not dare to guarantee it, not to mention that the success rate of serum is very low.

Li Chenglong wanted to develop a gene enhancement agent with a high success rate and no side effects, because he had all the serum data, and also had all the genetic data of the T virus and Kryptonians as assistance, the first enhancement agent was researched in only two months.

The enhancement effect of this genetic medicine is the same as that of serum, it can also strengthen ordinary people to the peak of human beings, and there are no side effects, but the success rate is only about 10%.

Li Chenglong was not satisfied with this result, he continued to research, and spent another two months to improve, increasing the success rate from 10% to 90%, but the effect of strengthening also became 2 times, much weaker than serum.

Li Chenglong was quite satisfied with this result, and just as he was about to continue his research, Howard called and asked for his help.

The reason is that there are two huge monsters in New York, which are the failed products of the military's research, and now the military can't deal with these two monsters, they are fighting on the streets of New York, and the destructive power is amazing, and a large number of buildings, public facilities and cars are destroyed every moment, which can be called the most efficient demolition workers at the moment.

The government of Emmeric put pressure on the military and S.H.I.E.L.D. to deal with it as soon as possible, and although S.H.I.E.L.D. has countless agents, it inevitably has a little less means for this non-human monster, so it turned to Howard, one of the founders of S.H.I.E.L.D. for help.

Before, Howard could also arrange for Darwin and Asazzo to assist, but now that Li Chenglong is back, he can't give a direct order, so he can only ask Li Chenglong for assistance.

"Monsters? Could it be Hulk and Abomination? Li Chenglong thought to himself, he suddenly became interested, so he agreed to Howard.

Hulk and Abomination do not belong to the X gene carriers, but they are both products of genetic mutation, similar to the direction of Li Chenglong's research, which can be used for reference, especially Hulk, whose combat effectiveness is on the earth, can definitely rank in the top three, and there is no dispute about the ability to demolish and relocate.

Li Chenglong released the power of the sword soul, sensed some of their specific directions, and then used the suspension ring to open the space door and teleported over.

This teleportation happened to be teleported to the middle of Hulk and Abomination, who were facing each other, but neither of them paid attention to the "little bug" of Lee Chenglong.

"Bruce, you don't deserve this kind of power!" Abomination roared, and with that, he lunged towards Bruce, the Hulk.

"Roar! Hulk! Hulk yelled into the sky, and lunged at Abomination as well.

Both of them were very fast, but Li Chenglong's speed was even faster, and he saw him sacrifice his natal spirit sword and wave it towards the abomination, and a long and narrow spatial crack as black as ink appeared, instantly cutting the abomination in half.

Then he slashed off one of Hulk's fingers with a backhand, captured it, and put it into the space-time golden orb, and opened the spatial door, leaving the devastated street.

The Emerik military and the forces watching this battle were all dumbfounded, they thought that Hulk and Abomination were already strong, but they didn't expect an even more perverted one to appear.

However, Li Chenglong cast a spell to hide his appearance, and they could only see a vague figure in the video transmitted from the satellite, and the specific appearance and body shape could not be seen.

After Hulk was cut off by Lee Chenglong, he became even more angry, and his anger value increased greatly, and the severed finger was also restored by his powerful recovery power.

He couldn't find Li Chenglong, and he couldn't vent his anger, and after smashing a dozen cars into discus, he disappeared in a few jumps, leaving the helicopter sent by the military to return in vain.

As soon as Li Chenglong returned to the base, Howard called to thank him, and after a few polite words, Li Chenglong told him not to let the government come to disturb him, and then devoted himself to research.

After Nuwa changed the hardware, the computing speed increased greatly, and with the assistance of other experts, Li Chenglong spent another half a year to increase the effect to 5 times without reducing the success rate, which is basically the limit of this gene enhancement potion, if it is to be increased, it will take Li Chenglong twice the time, it may take five years and ten years.

"Nuwa, seal all the information of this genetic enhancement potion, and no one is allowed to consult it without my permission!" Li Chenglong ordered that he didn't plan to sell this kind of gene enhancement drug, at most he used it internally.

The basic research is almost over, and next, Li Chenglong is ready to help Nuwa make a human body, and after asking Nuwa, the gender is set to female.

Li Chenglong is not ready to use too many mutants' X genes, he plans to directly use the Kryptonian Codex to create a female body and make up for the defects in the Kryptonian genes.

This process is relatively simpler than making genetically enhancing potions, and it only took Li Chenglong a month to study thoroughly, and cultivate an 18-year-old female body, the body ratio is completely calculated according to the golden ratio, and the appearance combines the advantages of the East and the West, and it is not an exaggeration to describe it as a peerless city.

Not only does this body absorb stellar radiation to increase its strength, but it is also immune to the effects of kryptonite, and not only that, but Lee also added Wolverine's self-healing gene.

Wolverine's self-healing gene is one of the top genes in Li Chenglong's X gene pool, containing the origin law of this universe, as long as it is not instantly crushed into powder, it can be completely recovered, and it is completely immune to any fatal damage, and it is very powerful.

In order to quickly enhance Nuwa's initial strength, Li Chenglong also studied the Edelman alloy, and he used a relatively mild method to create a solvent containing Edelman alloy ions.

This solvent can be injected into the body by injection and integrated into the body's bone cells, increasing the toughness and hardness of the bone cells.

In the early days, this kind of skeleton was not comparable to Wolverine's alloy skeleton in all aspects, but in the future, it can definitely surpass, and it will not be restrained by mutants like Magneto.

Individuals can determine the amount and frequency of injection according to different physiques, such as Nuwa's strong physique, a Kryptonian can inject one tube a day, about 100ml, while ordinary people can only inject once a month or a quarter.

In addition to this, Li Chenglong also built an artificial sun to help Nuwa improve her strength.

The problem of the lifespan of Howard and Agent Carter, which is better solved for Li Chenglong, many X-gene abilities are accompanied by increased lifespan, such as Wolverine's self-healing gene. 10