After taking out the pill, Kong Lianyi clenched it tightly in the palm of his hand, treating it as a treasure.

Without waiting for her to order, the little maid in red next to her took out a porcelain urn that had been prepared earlier and poured the liquid into a square trough. As the liquid poured out, in the air, there was a glutinous fragrance and sourness.

Different from the heavy brown vinegar dipped in Ding Bao and Kong Lianshun when they ate fried buns, this liquid that looks like ordinary water is white vinegar.

Could it be that she wants the boat to swim on its own in this white vinegar?

Ding Bao's eyes narrowed slightly, as if he had vaguely grasped something, but he was not sure, and his interest instantly increased a little.

Over there, Kong Lianshun didn't have the heart to look at the clouds outside the window again, the flowers bloomed and fell in front of the court, his eyes widened, his black face was full of nervousness and vigilance, and he muttered to himself between his lips, worried and curious, and he didn't know what kind of demon his eccentric sister was going to play in front of Brother Ning.

When the two red-clothed maids carefully arranged the white vinegar trough, Kong Lianyi was not idle, she first pierced the red pill, and then tied it to the front end of the one-inch small wooden boat with cotton thread.

One qiē ready.

Kong Lianyi's two white little hands, cautiously holding the combination of pills and boats, stood in front of the white vinegar trough, probably feeling that everyone was paying attention, especially Ding Bao, a person like Uncle Shenggong and cousin Kong Ci, who could make her feel lightly restrained, was also engrossed, she was already a little excited, suddenly a little nervous, Bei Ya pursed her lips, and her little face was blurred with two light blushes.

The light in the room was good, and a pillar of light through the window edge happened to cast on the little girl's slightly nervous face, and the childish sweat velvet that was trembling was clearly visible.

"Ripples, don't be nervous. How you play on weekdays, you can play today. Ding Bao released a trace of supreme domineering, smiled and groaned, and Wen Yan comforted him.

And it was this very simple sentence, somehow, Kong Lianyi suddenly had more confidence after hearing it, and his feelings were also stable. Not only her, but also Kong Lianshun next to him instantly felt that his sister would definitely succeed this time, and this sudden thought, which was completely contrary to his original intention and vital interests, suddenly startled him, and he couldn't help but look at Ding Bao, Baba's, all resentment.

"Big brother, look at it. Little sister starts now. ”

After Kong Lianyi finished speaking, he stretched out his hands and laid the "Dan Pill Boat Combination" flat on the white vinegar liquid surface, as Ding Bao expected, the wooden boat was too small, and the Dan Pill was too heavy, the gravity of the two tied together was obviously greater than the buoyancy, and the specific gravity of the white vinegar solution was already small, so let alone swimming on its own, it was like throwing a stone into it, and it sank straight towards the bottom of the trough.

Kong Lianshun's face was full of different colors, his mouth was wide open, he wanted to laugh but didn't dare to laugh, Kong Lianyi, you devil also have today? Are you here today to embarrass yourself and be funny?!

Ding Bao, who had always been indifferent, said "Huh", suddenly frowned, his eyes swept back and forth a few times on Kong Lianyi's excited and nervous little face without any frustration, and then looked straight into the groove.

Things are really not so simple, the Zhenghong Pill dragged the small wooden boat and slowly sank into the white vinegar, although the degree was slow, but the route was straighter, and it seemed that there was no trend of change, but when it was about to touch the bottom of the trough, it suddenly stopped, and before long, it slowly floated up towards the water, and this time it floated, there was a tendency to get faster and faster!

After reaching the surface of the liquid, the fun did not end, and soon, Danmaru sank straight down with the small wooden boat, and then, as before, when it sank to the bottom, it suddenly came to a standstill, and then resurfaced.

After going back and forth a few times, the pill and the boat are not only up and down, but also uneven movement in the horizontal direction, if you put aside the Zhenghong pill, it is really as Kong Lianyi said when he said before, without fake manpower, the boat swims on its own, and her method is not only swimming, it is just like a small submarine, floating and heavi......

As soon as he saw the success, Kong Lianyi jumped up violently, clenched his little fists, and learned from Kong Ci, the void slammed it, his little face turned red, and his excitement was overflowing.

"Yin Yang Floating Dan" comes from one of the "Eight Chapters of Hong Gong's Dream Words", since the little cousin figured out the "Yin Yang Dan" called in the book, she played the trick of Yin Yang Dan floating in vinegar water, but this is the first time to play with a boat. Because this was completely an improvised idea of Kong Ci in the morning to increase the difficulty, the two of them also made a small wooden boat in the basement, and they simply experimented with it, and to be honest, she didn't know the bottom of her own heart before she came.

It's okay now, and finally lives up to my cousin's trust.

Kong Lianyi let out a long breath, rubbed his little apple-like cheeks, calmed down, and looked at Ding Bao with purring eyes.

"This, so possible?!" Kong Lianshun couldn't sit still anymore like a fire burning his buttocks, and circled around the trough like a headless fly several times, muttering to himself, puzzled, and finally had to turn his hesitant gaze to Ding Bao.

Ding Bao didn't seem to be aware of it, thinking about it to himself, and later, he directly scooped up the Zhenghong Pill pill, put it in his hand, and approached the tip of his nose to smell and distinguish it.

Well, the main ingredient is mothballs for insect repellent clothing, mixed with some stone alkali for cleaning and cleaning of pulp dyed cloths, and some red metal powder that can't tell what it is, but in the end, this should be irrelevant, just used to maintain the color of the pill.

Mothballs, stone alkali, white vinegar, bubbles, sinking and floating, swimming......

These key words quickly wandered in Ding Bao's mind for several times, and suddenly his mind cleared up and understood:

The specific gravity of the pill, which is based on mothballs, is slightly larger than that of the white vinegar solution, so at the beginning, it will slowly sink to the bottom of the trough with a small boat with little buoyancy.

However, due to the reaction of acetic acid in white vinegar with stone alkali, that is, sodium carbonate, the carbon dioxide gas produced is concentrated and attached to the surface of the pill, and after a certain amount, the specific gravity of the pill and the bubble as a whole is less than the specific gravity of the white vinegar solution, and the small wooden boat itself has buoyancy, and the whole floats.

When the pill floats to the liquid surface, the carbon dioxide gas attached to its surface will escape, so that the pill, which is slightly larger than the white vinegar, will drag the boat and sink again to the bottom of the trough, and in the process of descending, it will continue to re-accumulate carbon dioxide gas, then float up, sink again, and so on......

And because of the uneven bubbles, there will also be a certain displacement in the horizontal direction......

To sum up, it has caused such a strange phenomenon of "small boats constantly sinking and floating".

After Ding Bao pondered and understood, although he knew in his heart that the Confucian girl would definitely not understand the true truth, it should only be the magic of the pill by chance, maybe this was the recipe that some alchemist who was begging for immortality in exchange for his life, but it was enough to surprise him that he could use white vinegar and a small wooden boat to come up with such an interesting way to play.

First the magnet, then the solid, liquid and gas three states of the candle, at this time the chemical reaction is directly changed, and there will be any surprises if it does not come down directly.

Ding Bao was in a good mood all of a sudden, and came back to his senses, now the brother and sister were looking at him blankly, Kong Lianshun was worried, Kong Lianyi was hopeful, laughed, raised his hand and said:

"Lian Shun, help me get a piece of beef tendon that I just ate and come over."

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