The effect of Bai Ludan is as stated in Zhuang Liren's letter, without any discount.

In the month following 23 September, Hong Fan did not leave the gate and practiced diligently every day.

By October 20, he had continuously penetrated the Hand Shaoyang Sanjiao Sutra and the Hand Sun Small Intestine Sutra, achieving the six righteous cultivations.

In Hong Lie's squad, this is second only to Hong Lie (eleventh dao) and Shen Hong (seven dao), ranking third.

But it's not without problems.

As with the previous use of other martial arts resources, this time the Dragon Soul Tree also shared the benefits evenly, increasing the Yanliu Gong and the Sand World simultaneously.

Therefore, in just one month's effort, the four Bailu Dan have been exhausted.

This was within Hong Fan's expectations.

At the banquet after being "released from prison", he deliberately avoided Bai Ludan's specific indicators not to be low-key, but to take into account the expected difference that double consumption would cause.

The next morning, the morning light and birdsong pierced through the window on time.

Hong Fan, who rarely slept for four hours, pushed open the courtyard door and looked at the newly renovated courtyard.

The walls of the house are still rudimentary, but the ground has been re-leveled and tamped, and along the base of the wall there is still a row of newly made force training tools - not to mention the size of the weights, the pure steel barbell pole alone weighs 100 catties.

There are breakthroughs in martial arts, and necessary adaptation training is indispensable.

After a simple warm-up until he sweated slightly, Hong Fan loaded eighty percent of the counterweight on the pole.

Then there was a low shout and explosion, and the flame ran wildly through the meridians of the whole body, startling away the finches that were ushered in and sent by the locust tree.

The 700-kilogram barbell was lifted from the frame with almost no wobble.

Hong Fan took two steps back and firmly planted his feet, tried to bend his hips back, squatted until his hips were below his knees, and then pulled them up again.

A very standard full squat.

"If you put on knee bindings and waist supports, it is not a problem to lift dozens of kilograms."

Putting the barbell back, he looked at the deep soil marks pressed out under the iron frame, and couldn't help but show joy.

"In a month, I have increased my absolute strength by nearly thirty percent, and it has to be kryptonite!"

Hong Fan muttered to himself.

When he first joined Zhu Yiqi, he heard Hong Lie say that the family invested 10,000 taels of silver in this iron horse a year, and he imagined what kind of progress this money could be made in exchange if it was smashed on one person.

It's just that I didn't expect that the original daydream would become a reality after only a few months.

After the training, Hong Fan first had breakfast with Aunt Liu, and then went back to the house to take a nap.

After Fang Zhiwu's case, out of protection considerations, the clan specially exempted him from the task of riding in Zhu Yi during the year.

In this full month, Hong Fan not only practiced martial arts, but also completed the writing of the paper "Lagrange Interpolation Formula".

At present, this "masterpiece" is still pressed by him at the bottom of the bookshelf, and he has no intention of using the presenter as a supervisor.

The return gift of Taylor's formula made Hong Fan excited and secretly awe-inspiring.

The so-called wood show will be destroyed by the forest wind, and the "genius" must be gradual and solid step by step.

If an excessively young frontier kid produces top-notch academic results on a monthly basis, it will be like a midnight fire, which will not only attract attention, but also invite danger.

When the time comes, the opposing forces of the instrument and even Dahua will take action, and the first thing they will do is to come to the door to ask for their lives.

After lunch, Aunt Liu, who had been instructed by Hong Fan, went out alone to send some cloth and bacon to the family of Tian Liu.

Hong Fan bolted the courtyard door, and after confirming that there was no one around, he took out a large blank sheet of paper from the house and sat alone at the stone table to deduce.

Since Hongwu's investigation of the real culprit of Fang Zhiwu's case has been inconclusive, the clan directly forbade him to go out of the city to cultivate.

But Hong Beom didn't stop thinking.

On the contrary, as the true yuan of the sand world gradually became abundant, some ideas with a painting style that was very different from Dahua gradually emerged in his heart.

On the stone table, plain paper is laid out, and the drawings are written with charcoal pencils.

At the top is a line of small characters written "pre-mixed sand water cutting", and in the middle is a sketch of the mechanical structure.

The sketch is followed by a bunch of complex formulas that calculate the approximate impact pressure from the surface particle density, velocity, and average mass of the gravel.

At the bottom of the paper is a table of test results - each row shows a different equivalent of the true element output, and each column records the diameter of the jet, the duration, the damage effect, and the effective killing distance.

"In the last test, the peak pressure of my sand flow knife reached 90 megapascals, which is close to success."

Hong Fan muttered to himself, gathering a cloud of fine sand in his palm.

With his hand in his hand, he fine-tuned the true element according to his memory and data, and suddenly urged the power.

The beep sounded in a flash.

Thin and condensed beams of sand shot out from the middle of the sword fingers, and after maintaining a condensed half-palm distance, they exploded into the air.

Judging from the momentum, the peak pressure of this sand flow knife has definitely reached 100 megapascals, which is enough to cut through rock iron armor.

"In the past, I tried every way to calculate and adjust my moves, but I always had a bad move; I didn't expect that as soon as the sixth serious was broken, things would be done easily. ”

A smile broke out on Hong Fan's face.

"In the end, it is a miracle of great strength!"

As he spoke, he went to the corner of the courtyard and lifted the black cloth that had been covered, revealing a stone slab full of uneven holes underneath.

Hong Fan adjusted his breathing, drummed up the true yuan, and "tried the knife" again.

The high-speed sand flow is surging and surging out, easily knocking through the five-centimeter-thick stones.

"The lethality is enough, it's just that the attack distance is too short, and the preparation time is too long."

"My twelve canons and the eight veins of the strange meridians have not been connected, and the true qi rotation must be sluggish, and when I reach the peak of the Chaos Realm, I should be able to achieve it overnight."

Hong Fan said and put the palm of the "knife" in front of his eyes, and did not see any scars.

"In the previous life, when cutting with water, the garnet particles in it played a role of more than ninety percent, but the wear and tear on the nozzle was very serious."

"I have sand world over-distance control, but I don't have this problem."

After resting for a while, he took out a second piece of white paper from the room and pondered it intently.

There are two research projects documented on this piece of paper – the first is "Non-Newtonian Fluid Armorization (V2.7)" and the second is "Gliding Sand Wing (V4.4)".

The so-called Newtonian fluid refers to the fluid in which the shear stress at any point is a linear function of the shear deformation rate.

For example, water, alcohol, low-speed gases, etc.

To put it simply, crudely, but more easily understood, the viscosity of Newtonian fluids is determined only by temperature and pressure, while the viscosity of non-Newtonian fluids is also related to the force.

The non-Newtonian fluid studied by Hong Fan here is specifically referred to as "quicksand", a special phase formed by mixing sand, water, and air.

Compared with water, which is "the more vigorously stirred, the faster it flows", quicksand has special properties such as "shear thickening" and "shear thinning".

When a force is applied below the critical point, the liquid nature of the quicksand will increase – for example, the looser the feet of the person who are caught in it, the deeper the sinking will be.

However, once the external force exceeds the critical limit, the quicksand will increase its viscosity and solidify instantaneously, locking the object - its hardness after curing is very high.

The killing method that Hong Fan is exploring is to attach himself to quicksand and form a set of heavy armor.

In this way, the sand armor is soft and close to the body in the normal state, and it does not affect the movement at all.

Once the enemy's weapons and limbs are chopped outside the armor or pulled out of the armor, the sand armor will be instantly solidified, which is equivalent to having the dual effect of defense and locking, which can be called a killer for opponents who don't understand.

In addition, since the above changes are entirely physical properties of non-Newtonian fluids, there is no need for a Hongfan on-site reaction and no additional true element consumption.

All he had to do was maintain the quicksand phase of the sand and the shape of his armor.

And that's just the effect of the force.

In the future, if the sand world reaches the qi realm or even higher, Hong Fan may also be able to take the initiative to use the "shear thinning" nature of quicksand to make battlefield-level changes—such as liquefiing large areas of ground and turning solid earth into "water", binding military formations and even engulfing buildings at one time.

In contemplation, time flies.

When Hong Fan came back to his senses, the sky was dark on the courtyard wall, and the sun was gone.

PS: Today's second half of the chapter explains that readers who have read my last old book should have a sense of familiarity.

It may be a bit verbose in the reasoning.

But if you don't talk about this, the research and development of killing methods will not have that taste.