After Liu Tong followed Cao Ang back, Cao Ang took a group of servants to Youxian Hall, and Liu Tong went back alone to find the red carp. It's been a few days since I came to Xinye, and I'm already in good health, so I should take the red carp out and buy her some jewelry, clothes, etc., Liu Tong thought to himself.

As soon as he arrived at General Zuo's mansion, he saw a group of cavalry waiting in front of the gate, and a carriage stopped at the door.

"Big brother!" When the red carp saw Liu Tong dismounting, he came over happily and pulled Liu Tong's sleeve.

Well, why doesn't this girl call herself "Childe" today, Liu Tong looked down and saw the red carp blushing, and leaned shyly beside him.

"Big nephew!" The military general next to him laughed, patted Liu Tong's arms apart, and grabbed Liu Tong's arms, "A certain is Cao Hong Cao Zilian, I just heard today that the eldest nephew and good niece are here, and I specially came to pick you up to live in the house!" Your aunt has already arranged a place to live and a feast, so come with me. ”

Liu Tong saw the red carp nodding and carrying the package on his shoulder, knowing that the red carp had agreed and packed up his things.

"The kid has seen General Cao!" Liu Tong hurriedly saluted Cao Hong, Cao Hong saw Liu Tong salute, smiled even more heartily, and the corners of his mouth trembled.

Cao Hong helped the red carp into the carriage and stepped on the war horse, "Big nephew, go, go home!" ”

"General, do you want to say hello to Grand Master Cao?"

"Eldest nephew, Luo Hu and I are brothers, you can just call me uncle. I have already reported to General Zuo about taking you and Hongli to live at home, Cao Ang's side, I'll talk about it. ”

When Liu Tong heard Cao Hong say this, he had no choice but to get on the horse and follow. I thought to myself, Cao Hong is really a righteous person, and there is a trace of excitement, Cao Cao also knows himself!

Cao Hong's house is far away from General Zuo's Mansion, in the north of the city, the courtyard is smaller than General Zuo's Mansion, but it is more exquisite, and the porch and garden are more wealthy. Liu informed that Cao Hong was famous for being miserly with money, and it was not surprising that his family was wealthy.

When entering the door, Mrs. Cao Hong brought her sons Cao Fu, Cao Zhen and other family members to greet her, and the scene was grand. Liu Tong and Hongli's rooms are adjacent, both in the west wing of the backyard.

The two moved, and the things were Liu Tong's horse and stick, and the red carp was a package. After recognizing the porter's residence, Cao Hong took the two to the hall, and a servant had already prepared a banquet.

Seeing the enthusiasm of the Cao family, Liu Tong sighed again that Cao Hong was righteous, but he didn't expect the red carp father to have such a status in Cao Hong's heart!

Mrs. Cao had already put on brand new clothes for the red carp, and was praising the red carp for being handsome, making the red carp twist. Mrs. Cao kept giving vegetables to the red carp, and there were some delicacies that the red carp had never eaten, and the red carp was very restrained.

Liu Tong looked at the red carp while coping with Cao Hong's toast.

"Big nephew, General Zuo already knows about your improvement of military rations, yes, that is, dried sweet potatoes, dried potatoes and pancakes, I heard that you can also purify mineral salt?"

"Well, it's not a very difficult thing, mineral salt contains a lot of impurities, through filtration, dissolution and evaporation, it can indeed be purified, and the quality and taste of salt can be greatly improved."

"Big nephew, if that's the case, you've made a great contribution!" Cao Hong looked at Liu Tong as if he was looking at a treasure, and kept laughing.

"Cao Ang has prepared some pancake pancakes according to your description, and tomorrow I will teach your aunts how to do them at home?" In addition, I wrote down what I needed to purify the salt, and I immediately called someone to prepare it. Big nephew, if you succeed, General Zuo will have a heavy reward, you are extraordinary in martial arts, I believe it won't be long before you become General Zuo's right-hand man! My Luo Hu brother can also smile at Jiuquan. Cao Hong looked at Liu Tong with satisfaction.

Although Liu Tong felt that Cao Hong's enthusiasm for himself and the red carp might be related to pancakes and salt, he was not unhappy, after all, Cao Cao was famous for attaching importance to talents in history, and since he came to this world, he had nothing to rely on with the red carp, if he could get Cao Cao's appreciation, it was undoubtedly the best way to be promoted.

"Uncle, where do these corn, sweet potatoes, and potatoes come from?" Liu Tong has been very curious about this these days.

"Oh, I heard that it was a sacred object obtained from Kunlun Mountain, and the yield is really high."

There can't be these crops in Kunlun Mountain! Liu Tong thought to himself, I don't believe that in this era when transportation is basically relied on, these crops will come from the Americas across the ocean, in this era, if you tell people that the earth is round, and there is an America on the other side of the sea, it is estimated that people will be killed.

"General Zuo knows the value of these crops, so he has been secretly planted, and when we have our own territory in the future, we can plant them on a large scale. Oh, by the way, big nephew, how do you know these foods? Cao Hong said.

"That, that, well, I was adopted by Master since I was a child, and Master also planted some in Heming Mountain." Liu Tong has already thought of a statement about his birth out of thin air these days. He is Luo Hu's nephew, his parents died when he was a child, and he was adopted by his master's Xiaoyaozi.

Liu Tong must say that his parents are dead, and he must say that the master is a master in the world, and he has passed away, otherwise he will not be able to withstand investigation. As for Heming Mountain, one is that Heming Mountain is in Yizhou, which is far away, and the other is that he crossed from Heming Mountain when he was traveling, but it is also a bit authentic, and there are fewer elements of lying.

Dried sweet potatoes and the like, but it can be solved in one sentence, pancakes, it is not difficult to have a tweezer, but salt purification still needs some preparation. Liu Tong listened to Cao Hong's words, it should be Cao Cao who asked him to pick him up, and asked Cao Hong to help him complete these tasks, and he immediately became a meritorious person.

Liu informed that military rations and salt were of great significance to Cao Cao, and if he could be appreciated by Cao Cao, with his knowledge of later generations and martial arts, it would be possible to be crowned a marquis and a general in the future. In the Three Kingdoms, if you let yourself choose the lord, Cao Cao is undoubtedly the first choice, although Cao Cao's power is weak at this time, even if Liu Kuan is a traverser, Cao Cao is assisted by himself, plus his original eloquence, he can compete with Liu Kuan!

"Uncle, I'm also full, let someone bring some paper and pen, I'll write down what I want to prepare, and you tell someone to prepare. In addition, I see that our war horses do not have saddles or stirrups, and I can also draw drawings for people to build, these are cavalry weapons. ”

When Cao Hong heard this, his eyes immediately widened, "Okay, good, I also heard that Liu Kuan has this thing, God really helps me!" After saying that, he clapped his hands and high-fived, and suddenly a steward came into the door with a pen and paper, and it seemed that this person had been waiting outside the door for a long time.

Salt purification, Liu Tong does not understand the chemical method, only use simple physical methods. To grind the crystals into powder, you must first have a stone grinding, filter sand, fine sand, cloth, charcoal, dissolve and evaporate a cauldron, and so on, Liu Tong wrote all the way. He also drew some sketches of saddles and stirrups, Liu Tong was actually not very proficient in saddles and stirrups, and only drew a rough sketch, but this is the case, these things are undoubtedly cross-era progress for cavalry.

The steward took a few pieces of paper handed to him by Cao Hong, as if holding a jade seal, and retreated cautiously.

"Fu'er, Zhen'er, come over and toast your big brother Luo Tong!" Cao Hong beckoned to his two eldest sons.

Liu Tong saw two fourteen or fifteen-year-old teenagers, one older and one young, coming over with wine glasses. Both of them are very weak, not like the children of military generals. Liu Tong hurriedly got up, called the two brothers, and drank a few glasses in a row.

After breakfast the next day, Liu Tong looked at the piles of salt mines in the yard, and if he hadn't known in advance, he would have thought it was a kind of stone. Liu Tong admired the courage of the ancients very much, and ate it with the impurities such as nitrate, phosphorus, and potassium without treatment?

I've heard of calcium and iron supplements, but after eating these, can my body stand it?

"Uncle, this salt mine contains nitrate, phosphorus, potassium and other impurities, eating not only tastes bad, but also harmful to the body, we have to crush, dissolve, filter, analyze, and finally let it crystallize, so that the salt obtained can be edible."

"Yes, yes."

Cao Hong saw that Liu Tong was right, and although he didn't understand these words, he believed more and more that Liu Tong could do it. Because the whole family has already eaten the pancakes made under the guidance of Liu Tong just now, they are indeed delicious and easy to carry and store! This is also the most fragrant and accomplished breakfast that Cao Hong ate.

"Big nephew, then, let's get started?" Cao Hong looked at the red carp and Liu Tong and asked for advice.

"Let's go!" Liu Tong said.