When Wang Xuan returned home and saw Li Shimin there with a black face, of course Wang Xuan knew the reason, but he just didn't say it, then glanced at Li Shimin and walked towards the kitchen.

And Li Shimin saw Wang Xuan walking towards the kitchen, and he followed directly without hesitation.

When he came to the kitchen, Wang Xuan asked his subordinates to find a twine for him, and then he took the twine to the edge of a pool, caught a big grass carp with his bare hands, and after using the twine directly through the mouth and gills of the grass carp, he pulled the twine and was tied to the tail of the fish, and pulled the whole grass carp into the shape of a bow with a hard pull, and threw the grass carp aside.

Tell one of the subordinates below to put the grass carp in a cool place and sprinkle some water on the fish's gills every other hour.

After everything was done, Wang Xuan left the courtyard where the kitchen was located and returned to his study.

During this whole process, Wang Xuan ignored Li Shimin, who had been following him with a black face.

Even when he came to the study, Wang Xuan did the same, he didn't pay attention to Li Shimin, but took a pen and drew drawings on paper.

In fact, there are many ways to achieve short and medium-distance transportation of live fish, reducing the number of live fish, or adding catfish is feasible, especially when transporting a large number of catfish, adding catfish is a good method.

But there are too many live fish, and there is no room for the fish to swim at all, that is, it is useless to put more catfish, and the fish will still die.

After all, adding catfish is just to use the catfish's brave and ruthless nature, so that it will continue to attack live fish during transportation, increase the swimming of live fish, and even splash water, so that the water splash and the oxygen molecules in the air will combine, providing more oxygen molecules in the water, so that the live fish will not die due to lack of oxygen.

Therefore, in the case of vacuum packaging, and a large amount of oxygen is injected into the live fish water.

The only solution is to stir the water and turn the dead water that transports the live fish into living water.

And if you want to turn stagnant water into living water, then the hand-cranked water turbine can solve this problem very well.

However, Wang Xuan thought about it carefully, so that he had to shake the wooden handle by himself during transportation, which was a bit troublesome, so it was better to directly put the water wheel in the water tank containing the live fish, and then connect it to the wheel with a wooden handle, so that when the fish truck was advancing, there would be power to drive the water wheel to rotate, so that the stagnant water would become living water.

It's just that how to achieve this, Wang Xuan really doesn't know, he just designs this set of devices, and then hands it over to his carpenters to get it.

Anyway, the design drawings and ideas are handed over to you, and whether it works out or not is your business.

Although this is somewhat scoundrel, Wang Xuan can't help it, who called him a scumbag in his previous life, if he knows this, why should he be a cook.

So after having an idea, Wang Xuan drew it seriously.

It's just that after Wang Xuan finished painting, Li Shimin didn't have a black face, he looked at Wang Xuan very puzzled and asked him what he was painting.

"Why, you Li Lao Er don't have a black face, and what I painted, what's the matter with you!" Wang Xuan glanced back at Li Shimin, and he was very faceless and directly scolded.

Li Shimin is also used to Wang Xuan's attitude, after all, a guy who dares to fight with himself and scolds himself all day long, do you think he can have a good attitude.

Of course, this is what Wang Xuan did a lot of for his good, plus this guy is still his brother-in-law, so he couldn't help it, otherwise if he changed someone, he might let him get away even if he didn't kill him.

But for Wang Xuan, Li Shimin really didn't have that heart, let alone killing, he hadn't seen him for a few days, and he still thought a little.

It seems that only when he stays with Wang Xuan can he feel the fun of teasing each other between friends.

"Why am I black-faced, that's not you bastard, why are you scolding me when you have nothing to do! Can't you just say something? Li Shimin said as he slapped Wang Xuan on the shoulder.

", can I just say that? Even if you don't mind, what will the people under you think! I don't want to be cut by you for no reason in the future! Wang Xuan rubbed his shoulders and said to Li Shimin with a look of disdain.

"You kid is also scared sometimes!" When Li Shimin heard this, he laughed there, and then joked at Wang Xuan.

"Aren't you talking nonsense? I used to be alone, and if I die, I will die, even if I am implicated, Xin'er is your sister, and you will not kill her, and with Xin'er, you should not be implicated in the others, after all, I have no heirs, but now Xin'er is about to give birth, I don't think about myself, and I should think about the child! Wang Xuan said to Li Shimin speechlessly.

And when Li Shimin heard it and thought about it carefully, it was really like this, but soon Li Shimin found out that something was wrong, after all, with Wang Xuan's temperament, he had done more excessive things than just now, and he would still be afraid of this, and with his merits and identity, as long as he didn't rebel, he really wouldn't kill him.

Then Wang Xuan did this just to make a fool of himself, and Li Shimin looked at Wang Xuan and the more he thought about it, the more he felt that this was the case.

Especially when he saw the corners of Wang Xuan's mouth twitch unnaturally, he was even more sure.

"Wang Xuan, you bastard, you are playing tricks on me, just to see me make a fool of myself, brother can't beat you to death today" Li Shimin roared angrily and hit Wang Xuan.

As if he knew, Wang Xuan dodged his body, and then flashed to the side, distancing himself from Li Shimin.

"Second Li, aren't you stupid? So soon I thought that I was playing with you, I let you stare at what I had in my hand all day long, but now there is a way to make money, do you want to know? After Wang Xuan dodged Li Shimin's attack, he shouted at Li Shimin with a smile on his face.

"I ...... What is the way to make money? Originally, Li Shimin was very angry when he heard that Wang Xuan was really playing with himself, but when he heard that there was a way to make money, Li Shimin hurriedly asked.

"Li Lao Er, Li Lao Er, you are the emperor, the whole country is yours, you need to ............"

"Get out, why is it unnecessary, in order to save expenses and let the people recuperate, you don't know what the quality of life in the palace is, let's talk about what the method is" Li Shimin glanced at Wang Xuan, and then said angrily to Wang Xuan.

"You said you deserved the emperor! Let's go! Tell you! As long as my fish truck is made, then there will be no shortage of live fish for sale in this Chang'an city in the future, and didn't you say that you would make an order to let the people catch carp?

In this way, not only can ordinary people have one more way to live, but we can also make a profit from it.

Don't you think this is a beautiful thing to kill two birds with one stone? Seeing Li Shimin like that, Wang Xuan didn't tease him, and told him the situation directly.

When Li Shimin heard it, he thought about it carefully, and it was really like what Wang Xuan said, it was a beautiful thing to kill two birds with one stone.