The strong current impact made Han Feng constantly retreat. The wall of qi in front of him also turned into a transparent shield, blocking the electricity.

On the way back, Han Feng held the shield in his left hand, pointed his right hand into the air, and a sledgehammer completely condensed with air smashed towards the fish monster's body.

The fish monster that was snorting electricity did not expect the attack from overhead, and the moment it was smashed, its crocodile-like body fell to the ground. The electricity coming out of his mouth disappeared.

The moment the current disappeared, Han Feng immediately stopped his retreating steps, and once again commanded the sledgehammer formed by the condensed air to smash towards the fish monster's body. At the same time, Wang Han also appeared beside Han Feng, and a bone spur shot out from the palm of his right hand, shooting towards one of the fish monster's heads.

With a ding, the bone spurs shot at the head of the fish monster were directly bounced open, and the head of the fish monster was not injured at all. The sledgehammer that Han Feng fell again was also whipped away by the fish monster's tail.

The little head in the middle of the fish monster let out another scream, and his entire body suddenly pounced towards Han Feng. Its speed was so fast, and in the blink of an eye, it crossed a distance of more than ten meters, and a fish head bit down towards Han Feng's head.

Under the activation of telekinesis, the fish monster was suddenly frozen in the air. The fish head with its mouth open was only less than a meter away from Han Feng.

With a bang, the air sledgehammer slammed into the fish monster at the moment when it was about to spit out electricity. Smashed it directly from the air to the ground. Half of the fish monster sank into the ground. No matter how hard it struggled, it couldn't break free from Han Feng's mental control.

The giant hammer that smashed into the fish monster's body was raised, turning into a large knife in the air, and slashing at the small head in the middle of the fish monster. Perhaps sensing the danger, the entire body of the fish monster burst out of electric currents, attacking aimlessly in all directions.

Using the shield formed by the air, Han Feng blocked all the electricity that was shooting at his side. The knife was finally cut off. With just one knife, he easily cut off the small head in the middle of the fish monster. It's much easier than imagining a wasted effort.

The fish monster, which had lost the little head in the middle, let out a scream of pain. The current ejected from his body suddenly weakened. Han Feng seized the opportunity and once again slashed at the fish monster's body with the large knife formed by the condensed air.

There was a metallic thumping sound from the fish monster's body. No matter how hard the fish monster's body was, it couldn't stop Han Feng's continuous attacks. The fish monster's body was cut in two by Han Feng.

Seeing the fish monster die, Han Feng breathed a sigh of relief. Ignoring his somewhat tired body, he hurriedly walked to Zhou Peng's side and asked how his body was. After making sure that Zhou Peng's body was fine, Han Feng walked over and broke open the fish monster's body and found out the energy stone in his body.

This time it was an orange stone that was found. Han Feng had already guessed this. After all, judging from the combat power shown by the fish monster, this is definitely not an ordinary fish monster. It is very likely that it is a fish monster that has evolved or grown again, otherwise it would not have been possible to have three fish heads.

After sending Zhou Peng back to the underground bunker, Han Feng continued to search the lake, killed the remaining few fish monsters, and began to move towards other places. There were only a few soldiers left there to guard the lake, and if he found a fish monster or other monster, Han Feng would rush back immediately.

With the experience of the three-headed fish monster, Han Feng learned a lot smarter. This time, none of them dared to be careless. No matter what kind of monster it is, they will do their best. If you encounter a monster that one person can't handle, four people will work together to try to kill the monster in the shortest possible time.

After a busy day. Han Feng and the others killed a total of two hundred and ninety-eight monsters. Four of the monsters had orange power stones in their bodies. Han Feng also made a detailed record of these monsters, so that he could better deal with them when he encountered them later.

At this current speed, Han Feng was confident that he would be able to kill all the monsters that broke into the base within two days. The reason for such a fast speed is that there are not many monsters in the base. After many monsters couldn't find food in the base, they all headed for the hives outside the base. This relieved Han Feng of a lot of burden. Of course, if you want to get rid of the monsters in the base within two days, the premise is that there are no monsters in the base that are more than level three. Otherwise, Han Feng was not sure that it would be completed in two days. As for the few third-level monsters currently existing in the base, Han Feng and the others could easily kill them with the joint efforts.

For those monsters that could fly, Han Feng didn't kill a few. Even if it is killed, there is no guarantee that there will be no more flying monsters breaking into the base in the future. In order to solve the threat from the air, it is necessary to have air defense facilities. With the resources available at the base, it is simply not possible to build an effective air defense facility. Especially for monsters that are not dead things, general air defense is simply ineffective.

Taking advantage of the night time, Han Feng originally wanted to increase his strength again by absorbing the energy in the energy stone. He is now desperate to know if if he will usher in another upgrade if he is promoted again. If that's the case, the monsters in the base won't be feared, and he alone will be enough to destroy them.

The last time he was promoted to the third level, Han Feng had used the equivalent of one hundred and one red energy stones. If he could improve this time, Han Feng guessed that these energy stones in his hand would probably not be enough.

Based on the number of gems required for the first two upgrades, the number of gems required from level 2 to level 3 has increased tenfold. If you can really improve to level four, it is likely to increase ten times. That is, it requires a thousand red gems.

A thousand red gems sounds like a lot. But Han Feng knew that this was already a very conservative number. If he's unlucky, and the upgrade requires not ten times the number, but twenty times, or even a hundred times, then he can cry.

After starting to absorb the energy in the energy stone, Han Feng quickly discovered a problem. The energy absorbed this time cannot be completely absorbed by the body. The energy that was previously absorbed into the body will be easily used by the body. The energy absorbed into the body this time had to be pushed by Han Feng himself, so that the strength of the cells could be enhanced little by little. It's a very slow process. Because the cells in the body have been strengthened many times, it will be difficult to strengthen them again.

When the biological energy in the body is saturated, if the cells cannot be strengthened with the absorbed energy, they will no longer be able to absorb the energy in the power stone. Even if it is absorbed, it will be wasted because it cannot be used.

After most of the night's hard work, Han Feng had only absorbed thirty red energy stones, and it was still far from being upgraded again if he didn't know if it existed.

In the morning, Han Feng also inquired about Wang Han and the others. After asking, Han Feng knew that it was not only he who had encountered such a problem. Wang Han and others also encountered the problem of slow absorption. At the end of the night, they had only absorbed six red gems at most. It was much worse than the number of twenty power stones that Han Feng had predicted to upgrade to level three.

They had the same problem as Han Feng, the cells in their bodies that had been strengthened absorbed the energy in the energy stones, very slowly. They also used to think about strengthening cells in other parts of the body. However, according to their guesses, even if all the cells in the body are strengthened to the current level, they will not be able to upgrade. It is likely that all the cells will have to be strengthened to the third level.

The strengthening of the body has encountered a problem. Han Feng and the others could only grope forward little by little. In addition to Zhou Peng, who was recuperating from his injuries, the other four people went out to kill monsters again. They must try to get rid of the monsters in the base before they can go to other places that are attacked by monsters. Let's not talk about Wu Tian, who has lost contact. Even Lin Dong's base was also attacked by more monsters, if Bai Hua hadn't completed his evolution at a critical moment and reached the second level through the power stone, the entire base would probably have been lost. Not to mention the other farmland bases, and the ring of defense around the ABP. Almost all of the troops in these places have been evacuated to hidden places, in order to avoid the attacks of monsters and bugs.

The day went well, clearing out a large number of monsters and no one was hurt. Back in the bunker, there was another piece of good news. That is, the three more people in the bunker completed the first step of evolution through the stimulation of the body by the energy stone, and reached the second level by absorbing the energy in the energy stone. These three are Meng Hao, Li Hui, and an ordinary person in his thirties who looks a little honest.

There is also good news, as well as Lin Dong. He finally completed his evolution in the battle with monsters and successfully rose to the second level. As for Xia Yu, as early as yesterday when Han Feng told him about the energy stone, he had already reached the second level.

At this time, there were already quite a few people in Han Feng's forces who had reached the second level. Han Feng was confident that he would clean up all the monsters in the base tomorrow morning. As long as the base is safe for the time being. Then he would immediately rush to the base where Wu Tian was located to rescue the people who were still struggling there.

Just when the confidence of the people in the base was soaring, in the deserted Gobi Desert in the northwest of China, several flying objects about 15 meters wide and about 40 meters long flew up from the ground, and two of them were heading towards the HB province where Han Feng was located.

When it was almost dawn, Han Feng was relying on energy to transform the cells in his body that had not yet been transformed. The communicator received news that one of their air bases had been suddenly attacked. The entire base was completely destroyed in less than ten minutes. Not a single fighter plane was spared, and not a single one escaped. The person who came out of the news just kept shouting the word spaceship, and then completely dissipated into a roar.

Shortly after the destruction of the airbase, two agricultural bases were destroyed, followed by another attack. No one knows exactly what attacked the bases. Han Feng only knew that what was attacking them was coming towards the ABP.

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