When Cao Jie came back, Liu Tong was even more surprised, because Cao Jie brought not only sweet potatoes, but also corn and potatoes, followed by Cao Ang with a curious face.

What kind of opportunity made Cao Cao have such crops, these crops are easy to grow and high yield, Cao Cao has them, he has a golden finger! With high-yield grain, there can be a large population and strong economic strength, Cao Cao can completely dominate the world like in history, how can he fall into the situation of dependence on Liu Biao?

"Quick, quick, Brother Luo." Cao Jie proudly handed a plate to Liu Tong.

"And corn and potatoes." Liu Tong took the plate in Cao Jie's hand and looked at the bag in Cao Ang's hand, it seemed that Cao Jie had also told Cao Ang, and it was estimated that they were also interested in the new meal of these items.

However, is it a new way to eat it grilled? Maybe, in this era, everything is boiled in water!

Liu Tong seems to have never made food when he came to this world, and every time he brings ready-made red carp to himself. Although I can't cook, it shouldn't be difficult to roast corn and sweet potatoes.

There was a small kitchen in the courtyard, and when a few people came to the kitchen, the red carp brushed the pot and put water, and took things to wash, but was stopped by Liu Tong.

Liu Tong asked his subordinates to burn firewood, and asked them to carry away the pot on the stove, thread the corn with a thin stick, roast it on the stove, and buy sweet potatoes and corn into the firewood ashes.

"Brother Luo, salt." Cao Ang handed over a clay pot, and Liu Tong saw that there were white flowers in it, faintly yellowed slightly, of different sizes, and some mashed powder sank to the bottom of the jar. Liu Tong shook his head, Cao Ang put down the clay pot, and brought another one, Liu Tong took it and took a look, there were black-brown crystals inside, I don't know what it was.

Liu Tong picked up a piece and licked it with his tongue, poof, and quickly spit it out, this thing was bitter, astringent and salty, "What is this?" ”

"This is mineral salt, and that one was bought from the north at a high price."

Liu Tong looked at these, and suddenly remembered that he hadn't paid attention to a problem some time ago, maybe it was because he was recuperating from his injury, thinking that his body was due to his bitter mouth and his taste was light, so he remembered that the red carp used to cook with a small amount of this mineral salt!

"Brother Cao, what kind of salt do the common people eat now?"

"The sea salt production technology is controlled by Liu Kuan, and the big families eat the high-priced sea salt bought in the north, and the people here eat cheap mineral salt!"

"This Liu Kuan's heart is black enough!" Liu Tong was inexplicably angry, salt is a necessity for the people, and controlling salt is to choke the necks of the people. Salt and iron have always been a strategic material controlled by the imperial court, an important biological material, and the main source of fiscal revenue.

No, Liu Tong took the sea salt, dipped it with his fingers, tasted it, and almost didn't feel bitter, there should be very few impurities in this salt, and the quality of this sea salt is ten or hundreds of times better than mineral salt!

"Brother Luo, don't you need to put salt?" Cao Ang saw that Liu Tong was thinking and asked.

"Oh, no." Liu Tong turned the corn.

After a while, the sweet potatoes, potatoes and corn were baked, Liu Tong patted off the firewood ashes, held the roasted sweet potatoes and potatoes with a stick, cooled them aside, and explained to Cao Ang how to eat these crops.

"Oh, pancakes? Is it really delicious and can be stored for a long time? Also portable? Cao Ang was not very interested in steaming and roasting, but he was interested in steaming, drying and baking pancakes, and asked while smashing his mouth and eating the steaming roasted sweet potatoes.

"Brother Cao is smart, did you think of using it for military rations?" Liu Tong said with a smile, "My golden idea, if Meng Degong adopts it, is it better than thousands of troops!" ”

Cao Ang grabbed Liu Tong, "Brother Luo, I will immediately ask someone to build utensils according to your description, and I will definitely make this pancake." ”

Cao Ang said and ate the last bite of sweet potato, patted off the ashes in his hand, got up and left, "Brother Luo, I'll ask someone to do it now!" ”

Liu Tong shook his head, and saw Cao Jie and the red carp holding hot potatoes and sweet potatoes, tearing the skin for a while, touching the earlobes for a while, and laughing knowingly, "Hey, I haven't taught you how to purify mineral salt, so let's go?" ”

"What?" Cao Jie paused and asked.

"It's nothing, let's eat."

Liu Tong thought to himself, what kind of era is this, the most basic common sense in later generations has also become a golden idea!

On the second day, Liu Tong got up early in the morning and came to the courtyard to practice, and Cao Ang came over, but he didn't mention the matter of making pancakes.

"Master Luo, let's go, let's go to my second brother to find him to practice martial arts together."

Liu informed that Cao Ang's second brother was Cao Pi, and he was curious about him from the bottom of his heart, so he followed him.

On the way, Cao Ang said: "The second brother's master, Shi Daxia, is a master of swordsmanship, and I can occasionally get his guidance, which has benefited me a lot." ”

"Oh, what's Shi Daxia's name?" Liu Tong knows a lot about the famous generals of this era, but the heroes of the rivers and lakes basically don't know about it!

"Shia?"

Cao Ang saw that Liu Tong was at a loss, and said in his heart, he still lacked some knowledge, a hero like Shi A had never heard of it!

Liu Tong followed Cao Ang through several courtyards and corridors, and came to the backyard of the West Courtyard to practice martial arts.

From a distance, I saw a stout man in his thirties standing aside watching a twelve or thirteen-year-old boy wielding a sword. The man is serious, short in stature, and dressed in short clothes. The boy was fair-skinned, not big, and danced with a long sword.

After Liu Tong arrived, he thought to himself, this man must be Shi A, no matter how he looks at it, he looks like a peasant uncle, and he doesn't have the chic demeanor of a hero at all, but his brilliant eyes make people dare not look directly.

When the young man saw the two of them, he stopped, hugged his fist to Liu Tong and said, "This must be Luo Gongzi, eldest brother, Luo Gongzi, can we practice martial arts together?" ”

Liu Tong looked at Cao Pi and saw that he was sincere, and thought, this kid can't see the sinister appearance, could it be that he only became bad when he grew up?

Because of Cao Zhi's "Seven Steps Poem", Cao Pi's reputation is not very good, anyway, Liu Tong feels that Cao Pi in history is not a good person.

Liu Tong nodded at Cao Pi and walked towards Shi A, "I've seen Shi Daxia, and I hope that Daxia can give me guidance for this little bit of effort." ”

Although Liu Tong knew that he had kung fu and had defeated Cao Anmin, considering that Cao Anmin was a trickster after all, it was estimated that in the eyes of the masters, martial arts were not in the stream. Now that the hero is in front, he worships inexplicably, and says sincerely.

Shi A glanced approvingly, although it was a little cold, Liu Tong was still a little happy, the hero is not an ordinary general.

Cao Pi pointed to the weapon rack, "Brother Luo, take a look, do you have the weapon you have in hand?" ”

There are many types of weapons on the weapon rack, knives, forks, swords, halberds, etc., Liu Tong hesitated, didn't know what to choose, and froze in front of the weapon rack.

"Brother Luo? What kind of weapons do you usually use? Cao Ang asked, too, after a few days of contact, Cao Ang didn't know what weapon Liu Tong used.

yes, what kind of weapon am I using?

Seeing this, Cao Pi thought, it can't be that he usually has no weapons, right? How can a country boy afford to hire a famous teacher and use a weapon. It's like a lance used by yourself, ordinary people can't afford it for a year without eating or drinking! The eldest brother thinks so highly of this Luo Tong, how well he said it, it seems a bit exaggerated.

"Do you want to find a stick for Brother Luo?" Cao Pi is very plain verbally, but there is a sense of ridicule in his heart, country boys fight, and the stick is the most handy!

"Well, is there one?" Liu Tong suddenly became clear, the image that was dangling in his mind just now was a stick! No, it could also be an iron gun?

"Brother Luo, pick one!" Cao Ang listened to Cao Pi asking Liu to use a stick, first, how can there be a stick, and second, Cao Pi is indeed rude when he speaks like this, and the stick cannot be put on the table in this era. Cao Ang gently pulled Liu Tong.

Forget it, Liu Tong took off the iron spear, raised his hand, it felt too light, squinted, there was no thicker iron gun on the weapon rack, so let's do it.

Cao Ang retreated with a smile on his face, Cao Pi saluted with a sword, and then the tip of the sword touched the head of the spear, which was considered to be the beginning.

Liu Tong didn't know how to start casting, and hesitated, Cao Pi swung hard, the sword body swung the spear away, and stabbed Liu Tong in the chest with a swing of the sword, slowing down and constricting his strength.

Liu Tong didn't think about it, on one side of his body, the spear was like a snake, and the spear flowers were flooding, sealing Cao Pi's sword.

Cao Pi was taken aback, it seemed that he still underestimated him after all. Cheer up and do your best.

Liu Tong has a spear in his hand, the more he dances, the smoother he becomes, and all kinds of moves emerge in endlessly, hey, he has lost his memory, but his kung fu is still not lost.

After more than a dozen moves, Liu Tong obviously felt that Cao Pi was at a disadvantage, Cao Pi was instructed by a famous teacher, and his swordsmanship was superb, but his internal strength was far inferior to Liu Tong, and he was younger, and his size and weapons were at a disadvantage, so Liu Tong showed mercy to his subordinates. Liu Tong didn't want to give in, but wanted to delay as much time as possible and test his martial arts.

Cao Pi and Cao Ang didn't know the situation, and Shi A, who was as wise as a torch, didn't know.

Shi A slowly saw Liu Tong's marksmanship, although there were traces of stick technique in the gun, it was not difficult to recognize.

Suddenly, Shi A's heart was furious, he stepped forward, raised his sword and stabbed Liu Tong in front of him, and the oblique sword blocked Liu Tong's spear head stabbing at Cao Pi.

Cao Pi knew that he was not Liu Tong's opponent, and the true qi brought by the spear had already made it difficult for him to breathe, and when he saw Shi A taking it, he retreated.

Thinking that Shi Akao was better than himself, Liu Tongxing's head was raised, he didn't dare to relax, and he did his best. only to find that Shi Ah killed step by step, and went straight to his own vital point.