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Chapter 101 Rotten Grass Turns into Firefly

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    Observing sundials and engraved leaks is the foundation of measuring the heaven and earth, and the sundials have been made.

    This thing is not difficult to do, simply put, you only need to know how to measure the shadow of the sun.  measurement method.

    And among those dog-headed teammates, there are many people who will.

    So Yan Zai and Dayi are not bragging, they do have many friends, but Dayi's friends are not in the south, and Yan Zai's friends are not in this world.

    The first sundial was made of wood. Generally speaking, the production was relatively successful. The watch on the side is the same, but this one is even simpler. In fact, the sundial does not need to mark the 24 hours, that is, the twelve o¡¯clock, because it cannot be seen at night.  The sun, as for the light of the moon, is not counted, because there are "lunar dials" that measure time according to the moon alone.

    However, the production of a moondial is more than ten times more difficult than that of a sundial, and the precision is bound to be insufficient. It also requires an observation table to assist in operations and calculations, which is generally more troublesome.

    "Cut a disc from the wood, draw the disc into twenty-four equal parts, and divide each equal part into three smaller equal parts, then the angle of each equal part is five degrees, representing twenty minutes  ¡±

    "Put the wooden needle through the center of the circle"

    So, here comes the important point. You don't know the latitude of your area, so you don't know the inclination angle.

    But I don¡¯t rush at all. This needle is the core of this simple instrument, and its angle of inclination must be correct. When you don¡¯t know the latitude of your location, you need to use one thing¡ªthe North Star.

    The tip of the needle must be aligned with the North Star.

    Up to now, I don¡¯t know what kind of world the world of mountains and seas is like, but thinking about it, the movement of the sun, moon and stars is actually not much different from the previous life. As a geologist, I can see that these stars are almost not too big.  Variety.

    At least, the scattered superficial knowledge of astronomy in the previous life can still be used.

    Of course, latitude and longitude are still important, but now, here, there is no way to judge the latitude and longitude of mountains and seas based on the geographical latitude and longitude of the past. Even though the stars in the sky are the same, the mountains and rivers and the direction of the terrain are very different.  .

    But at least the sun, moon, and stars remain unchanged. Even though the time is very blurry now, the latitude and longitude can still be calculated.

    Just look at the elevation angle of the Polaris from the latitude. As for the longitude, you must wait for the "precise time" of the first day to be calculated before you can make subsequent calculations.  Accurate calculations can only be made after it is manufactured. In the past, it was roughly deduced, but Yuzai thinks that it is roughly the same. Anyway, there are not many places where it is used. The biggest use of this thing is to go to sea.

    Go to sea?  Get up early!  Besides, I don't have a single shell coin on me, so why go to sea!

    ? At least until you get the pendulum clock out, it's almost enough, this thing is not particularly difficult to do

    The view of heaven and earth in Shan Hai Jing is very vague. The sun and moon rise in the east and set in the west. When the sun rises and the moon sets, everything in the world is renewed; when the sun sets and the moon rises, darkness dies.

    It is said that the Queen Mother of the West lived in Kunlun Mountains in the Great Western Wilderness, which should be the later Qilian Mountains, near Qinghai. She has the medicine of immortality, but this is just a legend.  When I came to the Central Plains to meet the Emperor of Heaven, as for the medicine of immortality, a great witch from the Queen Mother of the West once said with a smile: If people can live forever by eating grass, then the gods should go to the Great Western Wilderness instead of going to the stars.

    Immortal medicine exists, but it is definitely not as mysterious as in the legend.

    I have already seen the North Star.

    Instructions for using the sundial: Please face the dial to the north when using it.

    After thinking about it, I put this thing here, and after adjusting it, I left with Dayi.

    Tomorrow morning may be the moment to witness a miracle.

    The grass was fiddled with by Yan Zai's hands, and the inside was swaying, and one or two fluorescent spots flew out.

    "It's Liuying."

    Dayi looked at the grass, he blew a breath, and many fireflies slowly flew out of the grass.

    Lianshan grows dark, rotten grass turns into fireflies, bamboos are broken and bamboos are replaced, bells and stones change their voices.

    Yan Zai didn't know why, so he remembered this prophecy.

    Here, there is really a scene of rotting grass turning into fireflies.

    There are three kinds of fireflies: one is small and flies at night, and the belly is bright, which is transformed by the root of the grass. Lu's "Moon Order" so-called "the one who turns the rotten grass into a firefly" is this kind.

    A kind that is as long as a maggot candle, with a light behind its tail and no wings.?, the bamboo root is aliased as Juan, and the common name is Yingmaggot, which is also called "rotten grass turns into Juan" in Mingtang's "Moon Order".  , formed step by step.

    A kind of water firefly, living in the water, Tang Ji Ziqing's "Shui Ying Fu" said "what does the other do to turn the grass, what does this do to live in the spring" and so on.

    Of course, people in ancient times believed that human essence, blood, and soul would also turn into fireflies, gathering and dispersing like light. There were such records in the time of Emperor Huai of Jin Dynasty, but in the era of mountains and seas, fireflies were just fireflies.

    Tonight, the moon is full.

    But although dissatisfied, there is still brilliance.

    "Legend, Chang Xi bathes in the moon and gives birth to December flowers"

    Dayi began to tell the ancient fairy tales, Xihe and Changxi are the gods in charge of the movement of the sun and the moon, and their descendants are the Xishi, Heshi and Changshi.

    "This is very ancient. Although the Xi family and the family are separated in the Central Plains, they are a family. Like the Yandi clan, they are ancient clans left a long time ago. Before Emperor Zhuanxu, they were about the Yellow Emperor or the Emperor Zhuanxu.  At the end of Emperor Yan's era, the Xihe clan was already in charge of observing the sky."

    "Chang Xi, this can be traced back to Chang Xian and Chang Yi in the Yellow Emperor's time."

    "Xi He ruled the sun, Chang Xi ruled the moon, and the Yellow Emperor spread the calendar all over the world. These two clans have always been responsible for watching the movement of the sun and the moon, and recording the work of seasons. Of course, as for the gods who originally enjoyed the sun and the moon, and welcomed the sun and the moon.  I used to travel around the mountains and seas, and experienced the great wilderness in all directions. Among the gods who were sealed off in various places, there were gods of the sun and the moon"

    "Therefore, Xihe and Changxi are two gods. It is said that they are not only the wife of the emperor, but also the ancestor of the sun and moon in the Central Plains."

    There were many gods of the sun and moon in ancient times, not to mention the god of the sun, but the god of the moon, the most well-known later Maybe it is Heng'e who is not the god of the moon but lives on the moon.

    After Chang Xi, there is Wang Shu, and after Wang Shu, there is Xian Ah.

    Chang Xi has both personality and divinity, and is called Moon Mother; Wang Shu is a goddess who loves to fight, with a pure personality, and is Yue Yu;  This yu means "control", while Wangshu's yu is to drive the moon, which is the same as Xihe.

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