This is the female champion of the previous school, with a surprisingly high IQ, and the analysis of the problem is clear and the thinking is clear, I want to fool her, but I have to work hard.

I can't continue to make it up, I sent myself to the board, I can't wait to be slaughtered, I thought about it and Zhang Ying said: Actually, it's not that complicated, everyone knows that I have been running for ten years, right?

A few people listened and nodded, it is true that Zhang Ying has had the habit of running since he was a child, and he has never stopped, at first they made an appointment to run together, but then they didn't stick to it.

That's right, in fact, everyone sees that I run every day, usually after I run, I will practice in the woods behind the southernmost land of our village, usually with a stick to the ground pestle, continue to go deeper, with stones against the body of the tree keep flying, as a dart practice.

Not to mention, at first, I could only insert a little bit into the ground, and the stones could only hit the tree, but with the practice day after day, year after year, I was able to stick straight into the ground more than half a meter deep before I went to school in Shuicheng, and the stones could easily hit the tree.

In the past three years in Shuicheng, behind our school is the shooting range of the former troops, and I usually go there to practice when I have nothing to do, and over time, that's it.

And you think, the side of Boss Wang's fish tank is wet with water all the year round, and the whole ground is earthy, which is equivalent to a sponge, and the peach wood sword itself is thin and sharp, and there is no problem at all when it is inserted.

After Zhang Ying finished speaking, he looked at everyone, and then took a deep look at Shui Ruyan, Shui Ruyan was also looking over, but there was always a trace of doubt in his eyes, Zhang Ying thought that the previous woods had already been cut down and planted with saplings, and the shooting range behind the school had also been pushed into a vegetable market.

Dude, this is called death without proof, even if you don't believe it, Ruyan will not stare at this time, and there is no way to confirm that what I said is false?

Thinking about it in my heart, I said: Besides, the golden nail is driven into the concrete floor, I don't know if you have thought about a question? What kind of material is the bullet made of, and why can it penetrate a steel plate with a density greater than that of the concrete floor?

Zhang Ying thought to himself, it seems that it will not work if I don't give you some knowledge of chemistry and physics, in case you accidentally wear it, it will be a big deal, the reason why I chose to ask this is because Shui Ruyan is a weakness in some partial disciplines, physics and chemistry are weak, as long as you deal with Shui Ruyan, everything will be easy to do!

When a few people heard Zhang Ying's question, they were all stunned, not to mention that Shui Ruyan is a little weak in these two subjects, and the other three people can be said to be physical chemistry idiots at all, since they had this course in junior high school, they have never seen them pass, and they usually plagiarize Zhang Ying in exams.

Lan Yingying said first: I don't know, shadow, you know that our knowledge in this area needs to be improved, what else do you sell? Just say no? While speaking, her face was full of dissatisfaction, and she glanced at Shui Ruyan, the meaning is obvious, and then show it, I will let you look good in Ruyan.

Zhang Ying looked at this formation, the corners of his mouth twitched, he didn't dare to sell it anymore, he smiled and said: Okay, good, then the young master will explain to you, bullets are generally wrapped in copper sleeves with cores made of copper or lead, with high toughness, can instantly penetrate objects, copper and lead are both a kind of metal, high density, good stability, so the toughness is good, can penetrate the object without bending.

Then gold, which is a metal with ultra-high density, is much more stable and tough than copper and lead, so many high-grade bullets are made of gold.

Therefore, the penetration of gold is very high, and coupled with the gold nail is small and pointed, according to the principle of physical force, the smaller the force surface, the easier it is to penetrate, as long as there is enough strength and speed, it can be directly hit into the ground, of course, this also requires years of continuous practice wrist strength and accuracy requirements are very high.

Ladies and gentlemen, I don't know if I can satisfy your masters? After Zhang Ying finished explaining, he looked at a few people respectfully and said

Several people listened to Zhang Ying's explanation of chemistry and physics, which made everyone feel that what they said was reasonable, and they couldn't find anything wrong with it, and several people nodded one after another, which also proved that they agreed with Zhang Ying's statement.

Zhang Ying saw everyone nodding, and breathed a long sigh of relief in his heart, and secretly thought: My mother, it's really not good to make up this story without real talent, thanks to my buddy who is usually a good student and loves to read, otherwise this thing will really end badly today!

After such a heated and friendly discussion, everyone did not dwell on the previous questions, and just chatted little by little from the time everyone went to study in various places, and before we knew it, several people chatted until late at night.

A few people also fell asleep on Zhang Ying's bed, seeing that everyone was asleep, Zhang Ying adjusted the speed of the fan, covered everyone with a blanket, and ran to the living room to lay a mat on the spot and sat on it.

When I closed my eyes, I entered the state of emptiness after a short time, and the mantra of the Qi training chapter automatically came to mind.

"Qi is the body of the heart, and the heart is used for the use of qi. The five elements are one heart, and yin and yang are not biased. Upper and lower Mondays, different parts. The front is yang and then yin, and the back is light and heavy. Yin and yin are knotted. Yang returns to yang. The upper part is the beginning of the yin, but the lower part is the yang charge.

The upper and lower are condensed, and the middle qi is very hard. The week is rushing to the sky, and the week is like a mountain. The left must turn right, and the right must lead to the left. Advance is like flowing water, and hitting up is like lifting a mountain. The landing point is like a flying stone, the machine is off the crossbow string, the air is like the sound of the wind, and the air is like swallowing the river.

Rushing forward to catch the stars and catching the moon, retreating like a peng. The fingers are hooked together, and the shoulders are like pliers. The upper and lower levels are united, and the country is rich and the people are safe. Knowing that this is the middle decision, there is no difficulty in practicing."

Over and over again, with the continuous recitation of the mantra, great changes occurred in Zhang Ying's body, and the eight veins of the Qi Sutra, the bones of the whole body, the blood vessels, and every pore were filled with a stream of true qi that constantly traveled throughout the body.

Finally gathered at the lower abdomen dantian, the original inner dan, which was still the size of a grain of rice, was running at a high speed at this time, and every time it ran for a week, the inner dan would change significantly, it seemed to grow up little by little, and there was a thick fog-like steam rising outside Zhang Ying's body.

If someone sees Zhang Ying at this time, it is estimated that they will think that they have met an immortal, the fog wraps Zhang Ying, a little bit thicker and thicker, as Zhang Ying continues to cultivate and exhale, the fog drifts out of the living room with the gap of the screen door as if meeting the wind.

Just like that, there was no word all night, and before I knew it, the golden rooster was announced.