Here Tan Yun explained that he didn't grow this at home when he was a child, and because his family was poor, he wouldn't buy this kind of fruit that couldn't be eaten, so naturally he hadn't seen it.

"Well, no wonder you're talking serious nonsense." Cao Yi nodded and said, complaining.

"Why!" Tan Yun blushed shyly, didn't even bother to eat the cucumber in his hand, and said coquettishly: "Tan Yun has never seen it, so I have to guess according to my own cognition, there are indeed many things in the world, they are tender and faint when I was a child, but when I grow up and get older, the color will become darker and darker." You see ducklings and chicks, when they are young, they are pale yellow and tender, and when they grow up, the color of their feathers will become dark, gray, black, all of them. Childe, didn't you teach us to dare to imagine and guess......"

After finishing speaking, he pouted his little mouth, if he hadn't subconsciously raised the cucumber in his hand and stuffed it into his mouth, Cao Yi would really have to coax it.

"Hahaha, okay, what you said is right, your behavior of daring to imagine and guess is very good, and it is still very encouraging, but this time you guessed wrong. This cucumber is not native to our Central Plains or the Han people, it is an alien species. ”

"Alien species? What does that mean? Tan Yun tilted his head sideways and asked.

Even Liu Baiqing turned his head with interest, intending to listen to what Gongzi explained, he had an inexplicable curiosity and resonance for the words alien and species.

"Actually, it's literal, species, in fact, it's the meaning of items and kinds, here it refers to cucumbers, foreign, I just said, he is not a native of the Han country, it came from the Western Regions."

"The Western Regions? Is this the Western Regions now? Liu Baiqing asked.

"Well, the place is the place now, but the time is not the time it is now." Cao Yi originally wanted to show off his profound knowledge, but then he reacted, this cucumber has been planted in the Central Plains for so long, others naturally know that it is not this time, and his face is slightly red at the moment, fortunately, Liu Baiqing and Tan Yun did not find his embarrassment, and he laughed and covered it up.

"Emperor Wu of Han, you know, right?" Cao Yi hurriedly asked.

"Yes!" Liu Baiqing nodded a little excitedly, after all, the period of Emperor Wu of the Han Dynasty can be said to be the most powerful period of the Han people. "At that time, the military strength of the Han Dynasty also reached its peak, and the Xiongnu and Hu people did not dare to invade the border and stay away from the territory of the Han Dynasty, which was an extremely desirable scene for every soldier, and Liu Baiqing was naturally the same.

And after Tan Yun heard this name, she was confused, for her, she was only taught some books such as the Four Books and the Five Classics and "Women's Training" and "Women's Commandments" before, and she only reached the level of literacy and literacy, and at most read some poetry books, and she really never read the historical records.

Not to mention Emperor Wu of the Han Dynasty of the Great Han Dynasty nearly a thousand years ago, even the last official of this dynasty, the founding emperor of this dynasty, Tan Yun can't say his name, as for today's saint, it is only when others often talk about it.

In order to take care of Tan Yun, Cao Yi explained: "In fact, nearly a thousand years ago, our country was still controlled by an emperor named Emperor Wu of the Han Dynasty, when he ordered a minister, named Zhang Qian, to take more than 100 people to envoy to the countries of the Western Regions, and opened up the Silk Road. ”

Cao Yi came up with the term "Silk Road" as he spoke, but after all, this is the title given to it by modern scholars, and in this era, there is no such statement, so Cao Yi also consciously explained it.

"I know, I know, Childe, was the cucumber brought to us at that time?" Tan Yun said excitedly.

Cao Yi nodded and said: "This is indeed the case, after Zhang Qian returned from his mission to the Western Regions, he did bring back a lot of things that we didn't have originally, such as good horses, lions, camels, ostriches and other animals, which we didn't have before, were all brought back by Zhang Qian at that time." ”

"These are animals, but what about the food? Like cucumbers, why don't you say it, childe! Tan Yun was really still interested in eating, and he was already anxiously asking Cao Yi questions at the moment.

"Of course there is food, otherwise how can you eat the cucumber in your hand, at that time I brought a lot of food, such as grapes, alfalfa, walnuts, pomegranates, flax, beans and courgettes, etc."

"Ah......h Alfalfa, yes, these are also fruits? Tan Yun asked puzzled.

Cao Yi smiled lightly: "Don't worry, I'll answer you one by one, alfalfa is the golden cauliflower on our side, you always know this." ”

Tan Yun nodded obediently, she knew that the golden cauliflower was fried with river mussel meat and pickled golden cauliflower were all dishes she liked to eat.

"As for the rest, walnuts are walnuts, flax is square stems, also called hemp, and then beans are broad beans, and as for courgettes, they are the courgettes you are eating now." Cao Yi pointed to the cucumber that Tan Yun was eating and said with a smile.

Tan Yun glanced at the cucumber in his hand again, and asked suspiciously: "Childe, why did I listen to what you said, those who came through the Western Regions before were all with Hu characters, why did they all change their names later?" ”

"That's also related to history, you know, before this dynasty, it was five dynasties and ten kingdoms, and before that it was Li Tang, Yang Sui, and before that, it was the Five Hu and Sixteen Kingdoms and the Wei, Jin, Southern and Northern Dynasties, and it was the Jin Dynasty that ruled the world at that time, but the emperor was an idiot at that time, and then his wife controlled the government and made a mess of the country, so the rebellion of the eight kings broke out at that time, which greatly damaged the vitality of the Jin Dynasty. Later, Liu Yuan of the Xiongnu was called the emperor, and the country was called Han, and then the Western Jin Dynasty perished, and the five Hu ethnic groups that originally entered the Central Plains, that is, the Xiongnu, Xianbei, Xia, Di, and Qiang, formed the 'Five Liang: Qianliang, Beiliang, Xiliang, Houliang, Nanliang', 'Four Yan: Qianyan, Houyan, Southern Yan, Northern Yan', 'Three Qin: Qianqin, Western Qin, Later Qin', 'Erzhao: Qianzhao, Houzhao' and the Xia regime in the north, and the sixteen countries of the Cheng Han regime in the south. ”

"That's a lot! Sixteen countries, five Hu peoples, son, you are really amazing! This can be written down word for word! Tan Yun exclaimed, and by the way, he unconsciously patted Cao Yi's ass, and even Liu Baiqing looked at Cao Yi with admiration, as long as it involves reading, composing, poetry and lyrics, the son said first, no one dared to call it second, both of them thought so in their hearts.

"This story of changing courgette to cucumber is the country of Later Zhao in the Sixteen Kingdoms, because the rulers at that time were all Hu people, and you also know that Hu people are our Han people with a contemptuous name for their northern nomads, because they are often informal, not very clean, and have long beards, we Han people despise them and think they are all rude people, so we call them 'Hu people'." Cao Yi also picked up one of the cucumbers, took a bite, chewed a few bites, and continued.

**************