A dragon skin was slightly off-track when it was etched to the last few small steps. But Qin Shi didn't have any anxiety, but a happy color appeared on his face. For him, it was a big surprise to be able to make an error at this level.

He was not in a hurry to repeat the previous work, but reviewed every previous action in his consciousness, found out the shortcomings and points in the previous work, closed his eyes and pondered for a while, and after thoroughly digesting it, he picked up the etching machine again.

Qin Shi was not in a hurry to move on to the next step, but took out another fire dragon skin and repeated the previous work according to the previous steps.

In the end, it took Qin Shi nearly four hours to etch the remaining fire dragon skins. And in the whole process, ten dragon skins, three were finally scrapped.

"That's pretty good......"

Qin Shi breathed a sigh of relief, and then stretched. He originally thought that he would destroy at least half or even more of the fire dragon skin in order to control the etching method of this inch array.

"There are still a few small problems in the design, write them down first, and then improve them later......"

Qin Shi "rustled" down a few small problems that he had just discovered on the scratch paper next to him, then picked up the etching pen that had filled the material and began to fill the array he etched with the material.

Filling the subtle array pattern with a predetermined proportion is infinitely more difficult than etching the array pattern.

Fortunately, Qin Shi already had a certain sense of rhythm in the previous series of processes, and when filling in the Force materials, the control strength was still possible.

It's just that Qin Shi's Force is still a little worse, and after the spirit is locked, the material pulled out by the Force trembles slightly, destroying the previous effort.

"This kind of mistake is too low-level......"

Qin Shi complained to himself, put the destroyed fire dragon skin aside, and then picked up the process that had been etched to replace the skin, and continued to work.

Then pick up another ......

Just when the last one was left on the countertop, the fire dragon skin array on Qin Shi's hand was finally filled with materials.

After urging the Force to dry the Force material and activate the functions of self-protection and solidification, Qin Shi finally input the Force into the activation array.

The fire dragon skin instantly emitted a faint brilliance.

"Thinker......

Qin Shi smiled faintly, and after checking it, after finding that it was okay, he took off his shoes, applied medicine to the back of the inch array, and pasted the inch array on the sole plate of his right foot.

"Hiss ......"

Green flames suddenly erupted from the soles of his feet, and Qin Shi also snorted, and the pain caused by the fusion of the inch array with the skin was also extremely powerful.

Fortunately, there was a Xuanniao brand gold creation medicine in the potion, and the inch array originally had a certain healing function, Qin Shi's pain quickly disappeared.

Immediately, Qin Shi closed his eyes and concentrated, feeling the effect of this inch array.

The name of the inch array is the thinker, the first order of the inch array. The main effect is to stimulate mental strength and increase the speed of thinking. Activating the thinker while meditating can also increase the speed at which the Force is condensed.

Qin Shi had had enough of his slow increase in the Force. Chen Ji Jue is indeed extremely powerful, from the Force to the spiritual power can be condensed, and the strength foundation is extremely solid, among the opponents of the same level, it can almost be said that there is no opponent, and even the opponent can be pushed one or two levels later.

However, the slow condensation speed of Chen Jijue's Force also made Qin Shi secretly tremble. There is basically no enemy he encounters who is only one or two levels stronger than him. Among the people who bullied him, it can be said that there are as many dogs as in the holy realm, and legends are everywhere.

In the past, he could rely on Lovina's help, but now that there is only one Merry by his side, Qin Shi's sense of crisis has increased many times, so he naturally wants to do everything he can to improve his strength.

And the thinker who improves the effect of cultivation and meditation is Qin Shi's choice outside the multi-time flow space, and it is still a little difficult for Qin Shi to accept the side effects caused by multiple times the flow rate with the life fruit to offset the side effects caused by multiple times. The old altar is shy in its pocket, and it is difficult to provide so many life fruits for free all the time, not to mention, once the life fruit is eaten to the limit, the effect will also decrease.

Therefore, before his own strength could offset the negative effects of multiple times the time, Qin Shi would not easily try fifty times the time flow rate.

The thinker is there to make up for it.

Improving the obviousness and thinking ability of the two percent is not only reflected in the strength, but also has great benefits in the design of the array.

After checking his thinking, Qin Shi really found that his brain had a lot of spiritual melons, and he was very satisfied, seeing that there was still a fire dragon skin on the table, Qin Shi did not hesitate, picked up the etching pen, and started working.

A first-order thinker can't stack his strength, and Qin Shi can only use one.

This made Qin Shi feel a little regretful, if the thinker could be infinitely superimposed, it would be cool.

However, after calculating, Qin Shi's extravagant thoughts were extinguished. The design of the thinker, he not only refers to the elven magic pattern, but also combines the way of thinking of the old altar and the mother planet, and combines the laws of this world to follow the trend.

Such a product is certainly amazing, but in fact, the limit is also high, and the potential limit of the thinker's inch array is the end of the third order at most.

However, it has been calculated that a third-order thinker can bring a 35 percent increase in the user's thinking.

There was no doubt that Qin Shi believed that if a third-order thinker threw out the galaxy world, countless great arithmetic masters and even divine arithmetic masters would go crazy for the thinker.

And the arithmetic ...... These guys are almost the most proficient people in the galaxy world to make money...... When Qin Shi designs thinkers, he considers the audience at the first time.

In other arrays, there may not be people who are willing to pay a high price, but thinkers, calculators who are proficient in calculations, once they get the data of thinkers, they will definitely go crazy!

Of course, this is a sensational effect that can only be brought by the third-order inch array.

However, Qin Shi also believes that first-order thinkers also have a huge market. As an arithmetic, who doesn't want their thinking to increase and their computing power to increase?

After the etching pens on the workbench were empty, Qin Shi finally shook off his right hand, which had been pantothenic for a long time, twisted his shoulder, and heard the crackling of bones.

The second inch array has also been completed, probably because of the first thinker, a set of processes down, like flowing water, the product is much better than the first one.

Even the abilities have been slightly improved, albeit to outside the decimal point.

But for Qin Shi, any trace of strength increase is of great benefit.

Qin Shi almost moved his mind to remove the inch array on the foot board and replace it.

But that's just a thought.

This new, better-looking thinker is a gift.

It was a gift to his teacher Figaro.