No, Qi Ling's mind suddenly remembered an endothermic chemical reaction that the teacher had taught in chemistry class before.

It is to dissolve calcium nitrate in water, and when it dissolves, it will absorb heat, reduce the temperature of the water, and when it is full, the water will begin to freeze.

The so-called calcium nitrate, and a more familiar name is saltpeter, which is often mined in the production of *.

As long as you can find enough saltpeter, where is there any need to worry about not finding ice cubes in summer, and when the time comes, you can make more yourself, and you can also sell it to some small traders and vendors, wouldn't it be better.

Although Qi Ling's official history is not good, he still remembers a lot about food in previous dynasties.

For example, in history, people in the Tang Dynasty discovered the mystery that saltpeter can be used to make ice, and slowly some shrewd businessmen added sugar to ice and changed some tricks.

Then, by the Song Dynasty, the market in this area had tended to diversify, and the variety of various cold foods was increasing day by day.

Some people would use a planer to shave the ice into ice chips and mix it with sugar and spices, which was a popular food to cool off at the time.

They even mix some fruit and juice in the ice, and even add some jam and milk to make the simplest ice cream.

However, this kind of price is naturally more expensive, and it is a delicacy that only dignitaries and dignitaries at that time can enjoy.

The dynasty that Qi Ling crossed over to see that the culture has actually developed can be, papermaking, compass, * basically have.

It's just that they are still a prototype and have not reached a very stable level, so they still need to be developed.

But it is precisely because it is not any dynasty in history that Qi Ling has no way of knowing many things, so he can only grope his way forward.

This requires her to quickly learn more about the history and culture of this time and space, as well as the development of various fields.

Where to find out, naturally read more books!

Therefore, Qi Ling secretly made a decision that the matter of reading books must be done as soon as possible!

Thinking about these things, Qi Ling shook his head, threw out all the messy things, and joined the ranks of grabbing food.

This table was originally made of two tables, so it was quite large, and a group of people were standing with a bowl in their hands, and they were happy to eat.

At the beginning, they were all honest, whoever went down to the pot ate it, but in the end, there were no rules.

As long as it's in a pot and cooked, it doesn't matter who put it in, just pick it up and eat it.

There are even people who simply take a plate and put the food inside, just for convenience.

Count carefully, the dishes prepared by Qi Ling today are really not small, cold cabbage made a big pot, put it on the side, if anyone feels tired of eating panicked, go to pick two chopsticks and clear their mouths.

There are also cleanly washed potato chips, tofu cubes, radish slices, lotus roots, vermicelli, vermicelli, ......, as well as fresh pig blood, fish, pork, etc., which are set up on two full tables, and they are stuffed to the brim.

She originally thought that she would not be able to finish it, but she didn't expect that it would only be a long time, and some dishes would only be half a plate.

It can only show that everyone's appetite is really good.

But fortunately, Qi Ling still kept a back hand for herself, because she was afraid that there would not be enough food to eat, so she had specially bought some noodles in advance, and the portion was still a lot.

These are all fresh noodles that have been made in the market, and when he bought them, Qi Ling deliberately chose a very wide one, which looked very similar to the wakame noodles in northern Shaanxi in modern times.

There is a reason for choosing this kind of wide noodles, this kind of noodles will absorb a lot of soup, and it will make people feel very happy, and it is most suitable for hot pot.

And generally when eating hot pot, there is also an unwritten order, that is, the meat comes first, the dish comes last, and the noodles go last.

In fact, there is a reason for this order, the meat is put first, and the soup can also absorb some of the deliciousness of the meat, otherwise if you put the vegetables first, the essence of the hot pot base will be brought out by the vegetables, and the more you eat, the more blandish the taste will be.

As for putting the noodles at the end, it is because everyone has eaten almost at that time, and at this time, all the soup is absorbed into the noodles, and the taste is the best

So Qi Ling decided to wait until the end, when the dishes were almost eaten, then take out the noodles, put them in the pot, and eat another bowl per person, and they were completely full.

Eating hot pot, naturally, the food is getting hotter and hotter, so after a while, everyone's heads are covered with dense beads of sweat, and their bodies are also a little sticky.

A person like Meng Huan, who is very arrogant, loosens his clothes a little, so that he can breathe, but in this way, there are more exposed places on his body.

After Gu Jinfeng caught a glimpse of his movements, he pretended to look at Qi Ling disappreciatively.

Finding that she was only immersed in hardship now, and she didn't look in the direction of Meng Huan at all, this made Gu Jinfeng secretly breathe a sigh of relief.

But to be on the safe side, he got up and went to open the windows of the shop facing the dining table.

The night in this weather is still a little cool, especially tonight, when the wind blows, and the coolness blows on the people who eat, taking away a lot of restlessness.

also asked Meng Huan to tighten his clothes a little tighter, and this scene could be regarded as conforming to Gu Jinfeng's intentions, so that he could relax after seeing it.

How could Meng Huan not notice his small action, he secretly laughed in his heart, feeling that Gu Jinfeng's jealousy was a little inexplicable.

Qi Ling's eyes didn't look at him at all, he just ate and helped Gu Jinfeng grab some food, how could he notice himself.

It can only be said that after Gu Jinfeng fell in love with someone, he became a little abnormal.

Meng Huan thought to himself secretly in his heart while eating, and finally came to a conclusion.

It's better to be alone.

Just like he is alone, he doesn't have to worry about other people's affairs, one person is full, and the whole family is not hungry.

Don't let the joys and sorrows of another person affect your mood.

I don't have to pay attention to her every move all the time, and my heart can't let go of anything else.

So all in all, it's better to be alone.

If Qi Ling knew about this thought, he would definitely look up to the sky and laugh three times first, and then make a bet with him.

What to bet on? Naturally, it's a matter of gambling on feelings, and liking someone is an uncontrollable thing.

No matter how righteous Meng Huan is saying now, if he really meets someone he likes, he will definitely abandon this idea now.

turned to be like Gu Jinfeng now, in his eyes and heart, there was only one person in all.

Just for her。