Li Tian has been holding this position for almost an hour, and his arms are a little stiff, but fortunately, there is no major problem, just move it occasionally. [Read]

Tang Wan also woke up at this time, and she was surprised when she saw that the blisters on Tang Xin's skin in the bath were really much smaller.

What is this qiē?

"Will she be cured with salt water?"

Tang Wan asked in a low voice.

"Well, at least get her out of danger. ”

Li Tian used a very common chemical method, known as salting-out method. This method should be in the junior high school textbook, of course he didn't learn it, these are all when he was messing with the ghost king, he happened to encounter it, and the ghost king explained the principle to him in detail at that time.

Salting-out method, strictly speaking, means that only a certain amount of salt can be melted in a certain amount of water, which is called salt saturation. If the water in the bathtub contains a lot of salt, then after contact with the blister on the skin, the water in the bathtub will slowly absorb the water in the blister, so that the saturation of both parties is the same.

Because the water in the body is definitely not as salty as the water in the bathtub, the bathtub side will absorb a lot of water in the skin, so that the saturation (saltiness) of both sides reaches a balance. The skin is like a filter, a process that can take hours to complete, but it doesn't cause fatal damage to a person's skin.

If you go to the hospital, you may just think that you will pick up those blisters and then release the water inside, but that piece of skin will be wasted and will slowly fall off.

According to Tang Xin's current situation, when the time comes, 80% of the skin on her whole body will fall off, and it is estimated that her whole body will not be able to accept it by herself, especially the one on her face.

In this way, at most, a few broken blisters will leave a little scar, and that's because that piece of skin is broken, and salt can go in, but salt is slightly corrosive, and the chemical composition is sodium dioxide, sodium is a metallic.

The broken skin will definitely be eroded by non-stop dù, and after recovery, it may leave a faint scar, but it can also be slowly restored through the maintenance of the day after tomorrow.

Just like in a glass cup, the middle is cut by a piece of filter paper, one side is put a very high concentration of salt water, the other side is put fresh water, then the water on both sides will be the same salty after a period of time, this is because the water and salt on both sides are exchanged through the filter paper, and the salt concentration of both sides will stop when the salt concentration is the same.

Unlike the skin, water comes out of the skin easily, just like sweating, and there is no problem with a slight movement of cells.

But if you want to get water from the skin, it is more difficult, because the pores have a natural repulsion to the moisture in the outside world, otherwise if you swim for a few hours, won't you directly gain dozens of pounds?

It is to use the huge concentration difference between the inside and outside of the skin to let the water in the bathtub slowly absorb the water in Tang Xin's body without destroying her skin.

(You should be able to understand it, right?)

When Li Tian said the principle of this kind of thing, Tang Wan immediately understood, because she seemed to have really learned it when she was in junior high school, and the saturation of table salt seemed to be a number, I don't know if it was thirty-six or thirty-seven, so many years have passed.

Thirty-six means that in 100 grams of water, 36 grams of salt can be dissolved, and if it exceeds this weight, it will not dissolve, and it will precipitate in it like crystals.

Although I thought of it, but after all, it is something in a textbook, who can apply it to real life? Tang Wan studied very well before, and she never thought of this at all, even if Li Tiandu had already taken out the salt.

This is the gap, maybe Li Tian hasn't learned anything, but what he has learned can be used at any time.

After finishing speaking, Li Tian said: "That...... If you can still hold on, can you go and make me something to eat?"

It was already twelve o'clock at noon, and Li Tian was so hungry that he couldn't do it, this kind of thing was endurance.

When Tang Wan heard this, she immediately said: "Okay, I'll do it now, there are still some ready-made vegetables and r in the kitchen." ”

Seeing Tang Wan turn around and walk outside, Li Tian suddenly called out to her: "That...... There should be no salt in the kitchen, you have to go out and buy a little. Also, the department store closest to us is gone. ”

There is no salt, you can't scoop a little water from the bathtub to stir-fry, thinking of that picture, Li Tian felt that his appetite was suddenly gone.

"Well, I'll go out and buy some. ”

After resting for more than an hour, Tang Wan felt that her energy was not bad, and it should not be a problem to go out and buy something.

Sitting in the car, Tang Wan suddenly felt that the world was so quiet, and there were no worries at all, as if as long as Li Tian was by her side, all the troubles would automatically disappear.

When passing by Li Tian's gate, Tang Wan found that Wen Wen was actually playing with Wang Ma in the yard, and she wanted to shout, but when she thought of the situation at home, Tang Wan still held back.

It's good to be safe, you don't have to worry about Wen Wen's affairs.

As for those two people...... It doesn't matter what they do with their lives.

Tang Wan made up her mind that she would never let those two guys disturb her life again, since they were shameless and betrayed their sister, they were no longer her parents.

Do you owe them? Yes, you owe a life, but how much has Tang Wan done for them over the years? Even if she can't pay it back, Tang Wan won't feel too guilty.

It was they who wiped out all the little affection, until now.

Because there was no salt in the nearby department store, Tang Wan ran a little farther, and there were still some dirty marks on her clothes, but she didn't care anymore.

By the way, she bought some vegetables R, and Tang Wan decided to cook a good meal to treat Li Tian.

When she returned home and saw Li Tian still sitting there, Tang Wan's heart was extremely comfortable, these days, she was really tired, and finally, all the pressure in her heart disappeared.

This man can always resolve all difficulties and troubles.

If...... If there is no accident, then the two people are now ......

That day, Tang Wan was already ready, if it weren't for the fact that those two people suddenly made trouble.

He must hate himself now, right? But...... If there is no intersection in the future, then you ...... Do you want to give it to him once?

At least, he has left something in his life, and he will not have regrets, even if he can't get it......