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Chapter 156 Dreaming of the old prosperity

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    [1] "Red Plum. Eleven" Wang Mian. Poem

    The mountains and forests are nourished with an inch of heart,

    Could it be that the fragrance is not cold?

    The spring breeze is beautiful today,

    Let him look like an apricot blossom.

    Near noon, Yougan rode a white horse and came to Wang Mian's thatched hut with a few packs of herbs.

    Seeing the little bookboy preparing lunch in the yard, Youqian greeted him, "Hey, little bookboy, you don't have to work so hard, let's go to a restaurant for lunch!"

    The book boy looked up and saw the herbs in his hand, and knew that they were here for him to brew the medicine, so he kept his head down and continued to make his lunch without making a sound.

    "Cut~~ What a big shelf." Saying that, You Gan went straight into the room.

    As soon as he entered the door, he saw that Wang Mian was not lying on the bed, but was standing beside the table painting. You Gan laughed and said, "Oh, this miracle doctor is a god. He hasn't taken any medicine yet, and he is cured!"

    Seeing You Gan coming in with the medicine, Wang Mian said happily: "Ah! Brother Zhen, why did you bring me the medicine yourself? My illness is more than half cured, and I don't need to take medicine anymore"

    You Gan put the medicine on the table and said, "This medicine is not for you, but for Wife Jing."

    "Oh, your wife is also sick?"

    "Yes!" Yougan sat down, "I was going to make medicine for Jing's wife at home, but early in the morning, my daughter-in-law, who is Doctor Yu, led a large group of maids, mothers, and servants to go.  I went to look for that lady in white for you, only me and my wife Jing on the sick bed are left at home"

    Wang Mian didn't know how to say something grateful, he just kept saying "Oh, oh!"

    "When Doctor Yu left, he arranged for me to come and accompany Wang Juren, and to say something caring. He said that Wang Juren's illness was a heart disease, and he needed someone to communicate with him. She said, what if there is only one child in the family?  That¡¯s why I¡¯m sent here.¡± You Gan said with gestures, ¡°Look, you and I are the same age, although we can¡¯t say we are confidants, at least there is no generation gap in communication¡­¡±

    "Yes, yes, oh, this doctor is so careful! What should I do? What should I do"

    Yougan continued to send warmth, "What? Can I have a drink at noon? I'll go get some food."

    "Yes, my illness has been cured a long time ago, thanks to Doctor Yu's ingenious rejuvenation!" Immediately, he went out to call the book boy, "Liang'er, go to the 'vegetarian restaurant' quickly and order some hard dishes.  .¡±

    Yougan also followed out the door, and took out a banknote and handed it to the little book boy, "Does this vegetarian restaurant have hard dishes?"

    "Yes," Wang Mian said, "the word 'vegetable' is just for those who go to the temple to offer incense and come back to eat, so as to block the eyes of the Buddha"

    Yougan and Wang Mian both laughed.

    Wang Mian said: "You don't need to give him money, just credit."

    "Hey, today is my treat, how can I let you spend money."

    "That's what you said," Wang Mian said happily, "Brother Zhen is doing something for me, and he asked you to spend money to treat me to dinner. How can there be such a good thing in the world!" As he said, he walked in with Zhen Yougan's shoulders around him.  cabin.

    Seeing the painting that Wang Mian had just painted on the table, You Gan asked, "Wang Juren, is this a painting of apricot blossoms?"

    "Oh, brother Zhen, don't call me Juren, it's too much, just call me Yuanzhang!"

    "Heh, I envy you talented people," You Gan looked at the leaves painted on the branches, and said again, "Look, this painting of peach blossoms is really 'sparkling'!"

    "Brother Zhen, this is not a peach blossom, but a plum blossom."

    "When plum blossoms bloom, do they have leaves?"

    "There are," Wang Mian said, "However, I mainly want to use these leaves to reflect the late blooming of plum blossoms, which belong to the early blooming of buds"

    Yougan smiled knowingly: "It's still "the first bud", have you forgotten that Bai Suzhen and Xu Xuan had a son named "Xu Shilin" long ago?  He smiled and said, "You mean, this white lady has already 'green leaves turned into shades and branches full'!"

    Zhen Youqian is like this, after a few good words, he loses his shape.

    "Where, I want to use the green leaves to show the beauty of the white plum!" Wang Mian said, "That day, the girl in white was accompanied by a woman in green.  That pure, that white"

    "Oh, as a foil," Yougan said, looking at Wang Mian's paintings, "Actually, the white flowers are not necessarily white plum blossoms, but also pear blossoms? Or apricot blossoms?"

    Wang Mian thought for a while and said, "What Brother Zhen said makes sense."

    "So, you don't have to force it: ?So it can keep warm.  If it is summer, replace the hot water with ice, which can keep fresh and cool.

    Friends born in the 1980s and 1990s should remember that there used to be rough-looking thermos bottles at home, with bamboo shells or iron shells on the outside.

    In fact, this vacuum flask in the modern sense first appeared in 1892 and was invented by the English scientist Dewar.  This kind of bottle actually has two layers, the inner layer is the bottle liner, and the bottle liner is coated with mercury. If you have broken such a bottle, you will definitely find it.  This kind of bottle liner coated with mercury can prevent heat radiation and prevent heat from escaping; there is a vacuum between the outer layer and the bottle liner, which can prevent heat convection.  To put it bluntly, the insulation principle of this thermos bottle is to place the bottle liner in an environment where it cannot "communicate" with the outside world.

    This kind of vacuum flask actually existed in ancient China.

    In Hong Mai's "Yi Jian Zhi" in the Southern Song Dynasty, such a bottle is recorded: "After being touched by a drunk servant, it is regarded as the same as ordinary pottery, but the bottom is a few inches thick, and there are ghosts holding fire.  The depiction is so exquisite that no one can know what it is."

    Although "Yi Jian Zhi" is a novel of ghosts, many of the things in it are what Hong Mai saw or heard with his own eyes, not fabricated out of thin air.  The prescriptions mentioned in the book were even included in "Compendium of Materia Medica" by Li Shizhen.

    Of course, this bottle was discovered by accident. The story is as follows:

    In the early Northern Song Dynasty, there was a famous minister named Zhang Qixian. This man was a general and became a minister. He was a minister for 21 years.  However, Zhang Qixian once competed with Xiang Minzhong to marry a widow, which alarmed Emperor Song Zhenzong. After investigation, it was found that it was for the widow's dowry property, and both prime ministers were dismissed.

    Zhang Qixian has a descendant named Zhang Yuqing who lives in Xiaoshui Town, Yiyang County in the Western Jin Dynasty.  Once, Zhang Yuqing dug the soil and found a black bottle.  Zhang Yuqing liked it very much, so she put the bottle in her study, put some water in it, and put a few flowers in it.  When winter came, Zhang Yuqing was afraid that the water would freeze and crack the bottle, so she poured out the water every night.  As a result, he forgot one day, and when he looked at it the next morning, he found that the bottle hadn't frozen and cracked, while other things that held water had frozen and cracked.

    Seeing this, Zhang Yuqing felt that this bottle was unusual.  The next day, he did an experiment, filled the bottle with hot water, and the water didn't cool down all day.  Later, Zhang Yuqing used this bottle as a vacuum flask.  Sometimes when he goes out for an outing with his friends, he fills the bottle with hot water and pours it out when he needs to drink it. The water is still very hot, as if it had just been boiled.  With such an effect, Zhang Yuqing even regarded this bottle as a treasure.

    However, Zhang Yuqing's servant accidentally broke the bottle when he was drunk.  Zhang Yuqing looked at the bottle, only to find that this kind of bottle is no different from ordinary pottery bottles, except that the bottom is very thick, about two inches, and the bottle is divided into two layers.  pretty.  He asked many people, but no one knew the origin of this bottle.

    This story shows that in the Song Dynasty at the latest, there were already bottles similar in principle to modern thermos bottles.  The painting on the bottle, which reads "Ghosts hold fire to burn", should be the same as the mercury on the inner liner of the thermos, which can prevent heat radiation; and the interlayer may also be evacuated, which can prevent heat convection.  Only in this way can it keep warm.  (Remember the site URL: www.hlnovel.com
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