Desperate Night

As time passed, Yu Hong continued to adjust and test, using the formation symbols he imitated and drew, and combined with the black seal to try to strengthen it. Finally, on the fifteenth day, he received feedback that the black seal allowed successful strengthening.

In fifteen days and two weeks, his inner energy has also reached the sixth level of the third level of Thunder Legs. The progress is much faster than before.

During this period, apart from fortifying the nutritional cream once more, Heiyin did nothing else and cooperated with Yu Hong in experiments throughout the process.

Taking advantage of the characteristics of the Black Seal that can only be strengthened by the basic integrity of things, Yu Hong continued to adjust the simulated symbol patterns until he simulated and copied a piece of symbol details from the new Wind and Fire Spirit Slayer Formation, and finally got the Black Seal's approval.

A complete, basic air flow obstruction formation is obtained.

Inside the cave.

Yu Hong looked at the hand-drawn formation in front of him and wiped the sweat from his forehead. It was a very strenuous task to concentrate on drawing and to consume his inner energy.

But fortunately, there are ready-made formations to learn, and after adding tests bit by bit, I finally came up with a complete version.

‘This version is definitely not the most concise, but if the basic functions are satisfied, it is enough to enhance the black seal. ’

He sat cross-legged on the basement floor, looking at the formation patterns on the wooden board. Suddenly his heart moved slightly, and he took out the two trophies he had obtained earlier from the wooden frame in the corner.

One is a ruby-like crystal on a mutated crow.

The other is the black jade bone from Hayato's body.

‘Anyway, there are no tricks. The strengthening principle of Black Seal is to use synthesis instead of multiple strengthenings. Only by adding new things every time can secondary strengthening be carried out. In this case, let’s try adding these two.’

He didn't know what the use of these two things was. Anyway, he just relied on the black seal to control the direction.

Putting the two things on the wooden board, Yu Hong picked them up together, walked out of the cave, and came to the wall in the inner courtyard.

Snap.

He placed the board on the ground, not caring if anyone was around.

Anyway, others can't see the black mark and the countdown to strengthening.

He stretched out his hand and pressed it on the ground. His actions at this time were like checking the quality of the soil on the ground.

The pyroxene grass on the ground in the inner courtyard has long since withered, and now there is a patch of transplanted green wild vegetables. However, the sunshine is getting shorter and shorter. I don’t know how long these wild vegetables can last.

Yu Hong pressed his hand on the ground.

‘The black wind deceleration array is strengthened, direction: fuse the deceleration array and the other two black disaster materials. Strengthen the hindering and slowing effect on Black Disaster. ’

This time he strengthened it by including the large formation, the formation plank drawn by himself, and the two remnants.

In order to reduce the construction cost, Yu Hong directly let the black seal be strengthened. Although it took more time, it did not have to dig out the foundation again and restore it again, which saved more time.

The most important thing is that the reinforcement is only underground, so there is no need to worry about being discovered by others.

'In fact, it is okay to continue to strengthen this function for the Black Wind Protection Array, but the current array is too big, and the enhancement will definitely take a lot of time. If I strengthen the deceleration array alone, it should take less time, and I can also use the independently researched The deceleration formation is applied elsewhere. ’

This was the path Yu Hong had envisioned from the beginning, to learn new things from the enhanced products, and after understanding them himself, add new things, strengthen them again, and improve the camp step by step.

The inner energy is like this, and the formation is also like this now.

Soon Heiyin gave feedback.

The countdown time appears: 17:01.

Yu Hong breathed a sigh of relief, knowing that his guess was correct. Simply strengthening one function would not take much time.

Standing up, he took the slow-down formation plank with him and began to think about the combination of various formation symbols.

The symbols he currently masters include pyroxene formations, vortex formations, hidden symbols, and now the deceleration formation.

In the basement, Yu Hong looked at the four symbols on the paper and already had an idea in his mind.

Why was he wasting so much time? He was willing to leave the black seal alone instead of strengthening things, and he also wanted to cooperate with his own testing and draw a complete deceleration talisman array bit by bit, just for this moment.

'These four runes can already form a simple composite formation.'

Yu Hong thought in his mind.

‘The pyroxene runes are essentially strengthening, enhancing the effectiveness of the pyroxene itself. So it should be called strengthening runes. ’

‘The vortex itself is to store and release, and concealment is to hide the breath, reduce and stabilize the radiation activity, which can be used as a safety valve. ’

‘The final deceleration can be used to control the energy flow rate, and then combined with the internal air to draw the pyroxene powder as a link transmission line. ’

"In this way, a basic self-created composite formation structure is ready."

Yu Hong was excited. As long as a basic composite structure is completed, it means that nesting can be repeated continuously.

Gazing at the four runes, he began to think about which direction he should try first.

After a while, he decided to do the deceleration formation first.

'Use the vortex talisman array as energy source to absorb and release energy, and then use it to target deceleration. Finally, the talisman array is hidden to stabilize the structure, eliminate breath fluctuations, and strengthen the talisman patterns to enhance the functional deceleration effect.'

Yu Hong simply tried to draw the next four rune patterns on a board, connected them with simple Dahui graphite powder, and combined them in sequence.

Using the ready-made simulated structure of the Wind and Fire Spirit Slayer Array.

Soon after more than an hour.

A brand new formation board appeared in front of him.

The wooden board is the size of a washbasin. As soon as it is painted, it begins to quickly absorb the surrounding red value and store it as energy.

Yu Hong also made a foldable structure to save toner.

‘Then, it’s time to wait’

He put down the board with satisfaction, went to the first floor, and prepared to eat something.

‘If this is successful, then I can use the combination of array patterns to strengthen other functions. For example, strengthen the two erosion abilities of black wind and black fire in the Wind and Fire Slaughtering Array! ’

Yu Hong, who tasted the sweetness, felt that he had finally found the correct way to open the black seal.

Study and absorb the things that have been strengthened, summarize the experience and inspiration, and add a little new things, and you can strengthen new and stronger things again.

In this way, you will master more and more abilities, and become more and more flexible, and you can deal with many complex environments, and the things strengthened by the black seal will become stronger and stronger, a virtuous cycle.

Just like I summarized my internal energy foundation based on the strengthening method, and then directly strengthened the internal energy Wuji Condensing Qi Jue, which in turn accelerated the Thunder Leg Technique.

Time passed slowly.

The sky gradually became brighter, the night passed, and the only two hours of daylight in a day, silence came.

Yu Hong did not sleep all night, and he had been trying various combinations of runes.

At dawn, he drank some water and lay down to rest for a while.

Inside the stone fort.

Lao Li and Lao Zhou got up and started preparing for the new day, moisturizing the breeding box, testing the temperature, adding humus soil, sorting out cockroach and lizard feces, etc.

At the same time, they had to exercise and prepare breakfast.

Lao Li and Lao Zhou, as the fighting force besides Yu Hong, had to practice fighting skills and simulate shooting every day.

The two discussed the types of black disasters encountered outside and discussed how to deal with them best.

Just as everyone was going about their daily routine.

Outside the camp, a group of black insects flew and gathered, condensing into a black human figure.

It was the insect man.

It mechanically moved forward along the edge of the camp. The distance was getting closer and closer.

Puff.

Soon in the corner, a black lizard spit saliva and stuck to the side of its cheek.

But this time, the spitting humiliation attack that worked every time did not cause any action from the insect man.

It remained motionless and continued to move forward.

Slowly walked towards a corner of the camp.

In the cave.

Yu Hong sat up and focused on the insect man through the black lizard.

He did not go out rashly to avoid arousing the other party's desire to attack.

'In essence, the stone fort has hidden runes, and the fluctuations of the breath are hidden. What the black disaster sees should be just a strange camp with a little breath of living people. As long as the things in the camp that disgust it are greater than the attraction, it can be expelled. Therefore, the camp must ensure that all living people do not go out. Increasing the breath of living people will increase the attraction. '

Staring at the insect man, Yu Hong did not go out in person this time to lure the other party away.

He was also just about to try the specific power of the strengthened wind and fire slaughtering spirit formation.

Puff.

Puff.

The insect man slowly approached the fence of the camp.

It should be the position of the eyes, staring at the camp.

One step, two steps

Puff!

In an instant, its whole body turned into a swarm of insects, flew straight over the fence, and pounced on the stone fort.

But at the moment it flew into the fence.

The formation that was doubled took effect instantly.

A transparent air stream shot out from the ground, hitting the swarm of insects transformed by the insect man.

The air stream was like a pillar, completely wrapping the insect man inside, continuously impacting it.

At the same time, black sparks appeared inside the insect swarm, trying to ignite the insect man.

Suddenly, the speed of the insect swarm's flight suddenly slowed down, much slower.

But even so, the short distance of 30 meters in the outer courtyard was not enough for it to fly.

It was about to fly to the wall of the stone fortress.

Suddenly, a figure rushed out from the inner courtyard and threw a radiation grenade at it.

Bang!

Seven thousand negative radiation exploded, but this was more insulting to the insect man.

It was also attracted by the rich breath of the living, turned suddenly, and rushed towards the figure.

But with a bang, the figure actually began to run around the outer courtyard at a speed not slower than it.

The insect man was not as fast as Yu Hong in the open area, and now with the obstruction of the formation, it was even slower.

So the two chased and fled, and soon ran a circle.

Then two circles.

Three circles.

Four circles

The black sparks on the insect man turned into black flames, and layers of black insects were burned to death and fell down, like gravel.

As it circled around, it had stayed in the formation for more than ten seconds.

Yu Hong slowed down from time to time while running to wait for it.

Seeing that the insect man's body was obviously smaller than before, he felt relieved.

'Now it should have reached the upper limit of the formation's damage, 12,000 units of damage per second. Even if it is an insect man, with a total red value of more than 100,000 radiation, it can't withstand the burning at this speed. '

Sure enough.

Ran a few more laps.

The size of the insect man was half the size of when he came in.

It was only 1.4 meters tall at this time, like a dwarf. When it found something wrong, it turned around and rushed out of the formation.

Seeing this, Yu Hong simply stopped and tried to lure the other party to continue chasing.

But this insect man obviously had a certain intelligence. He didn't even look back, and still kept his human form and rushed out of the camp, disappearing in the fog of the mountain forest.

Yu Hong chased after him, stood in the yard outside the camp, and looked out.

He didn't dare to chase him out. Because apart from the formation and props, he didn't dare to come into contact with the insect man in person.

Standing inside the fence, his face finally relaxed a little.

‘The formation needs to be strengthened, but the damage is indeed very strong. Except for the fast-moving level 8 black disasters like the insect man, the rest of the black disasters are not worth mentioning to the camp.’