"If there is an instrument for measuring the days of the day, then there must be the same thing for measuring the years of the night. ”

Every time Dayi sees a sundial, he thinks in his head, there must be something, corresponding to the sundial, the sun gives birth to the day, and the moon shines through the night, but the moon does not necessarily appear as many times as the sun, and the field of the wing is measured by stars.

"How did you rely on the stars to measure the hours?"

Yu Zai is very curious, about the stargazing of the ancient times, in the later generations without any skills can not be understood, and there are sixteen gods in front of him who are good at watching small stars at night, at this time if you don't ask for advice, when will you wait?

And they actually have the wonder "Stonehenge"!

Unlock the Tech Calendar, +5 Faith, Goodbye.

This thing looks like it can buy a great man!

In fact, it is said to be Stonehenge, in fact, it is the big stone house where the Twenty-Eight Gods live during the day, because it is arranged around the sacrificial flame according to a certain law, so when the Twenty-Eight Gods describe themselves, Yu Zai will think of such a thing as Stonehenge.

Nobo began to tell Yu Zai about their methods.

"What the earth carries, including everything between the up, down, south, south, north, and west. Within the four seas, there are also the sun and moon shining, there are large and small stars rising in the east and setting in the west, there are four seasons of spring, summer, autumn and winter to record the seasons, and there is a 12-year cycle of Tai Sui to ..... the right day."

"The stars in the sky move, like the ..... right now"

Wild Bo looked up, looked in the sky, saw a star, pointed to the star, and said the current time, which was about half past two in the second half of the night.

This is similar to the method of judging the approximate time by looking at the moving position of the stars in the sky when Yu Zai used to explore the geology.

However, the ancients looked at the stars to distinguish the time, not only the approximate time, which also involves the "celestial equator" and "constant circle", after listening to the wild uncle's telling, Yu Zai was suddenly a little confused, looking at the stars is actually a university question, and ordinary people really can't play.

The stargazing skills of the Twenty-Eight Gods are even more powerful than Uncle Xi's, but such a powerful stargazing technique cannot accurately correct the time, so the sacrificial fire is needed, if there is no sacrificial fire, according to the Twenty-Eight Gods, the stars will move every day, and it is slower than the previous day.

Yu Zai disagrees with this statement, of course, don't say it well, after all, in terms of stargazing, compared to them, it can really be regarded as a three-legged cat kung fu.

"The night is governed by the stars, the big moon, and the celestial chicken, and when the big moon rises in the east, there will be Chang Gung star in the western sky...."

No matter what the world sees, at least some of the knowledge points in the 28 gods and people talking about stargazing are inseparable from what Yu Zai knew in the past.

"A third of the fire of the sacrifice has died out, and we cannot see how much time has slowed down, and the shadows have disappeared, and all that lives in heaven and earth is a little frightened. ”

The Twenty-Eight Gods still hoped that Yu Zai could go with them, and at this time, Yu Zai thought of something to keep time at night.

That's night drain.

The so-called "night leaks, the sky will be bright".

But this thing,To be honest, it's hard to make.,Compared to the sundial,Yu Zai doesn't know the specific production method of the night drain.,This is relying on the delay of the drip to make accurate time calculations.,Maybe archaeologists can know how to make this thing.。

But Yu Zai, for Yu Zai, this is indeed a very unfamiliar thing, just like the moon dial that I thought about at the beginning, this thing sounds like it is made after the moon, but in fact, the moon dial is more than a thousand years later than the appearance of the sundial, and it is very difficult to make.

After listening to the ancient astrogazing techniques of the Twenty-Eight Gods, Yu Zai knew that this was definitely a good thing.

But the Twenty-Eight Gods began to complain.

"Sundials are a good thing, but they still have shortcomings!"

"It's just a matter of delaying the years!"

"If the Fire of the Yan Emperor can be re-ignited in the wilderness of Biyi...."

"yes, yes, come with us!"

"We can't give you three branches, but we can give you something else!"

"Yes, yes, yes!"

The gods began to respond noisily, and Yu Zai asked with a smile: "Yes, the road is far away, you can't just promise strangers, we don't know about you, let alone Lingnan, so we went so rashly, in case I die, what about that tribe?"

The gods said, "We will drive the wind and rain and open the way for you!"

"We can call the beasts and find your way!"

"If there's a cliff, we'll jump over it with you!"

"If there is a great river, we will carry you on our shoulders!"

"If there's a strong wind, we'll form a wall to block you!"

"If there's an earthquake, we'll run with you!"

The gods spoke very sincerely, and then they asked, "If I go with you, what is the good thing that you speak of?"

Ye Bo said: "If you help us light the sacrificial fire, we can give you the fire coal, which is a good thing for the fire wizard to cultivate." ”

Yu Zai: "Fire coal?"

Is it the kind of charcoal that is understood?

Ye Bo described that, in addition to the normal charcoal, he specifically mentioned that the Fire Weariness Country is rich in a kind of black stone that does not slip away, and the heat that burns is not inferior to that of firewood, and there was once a fire wizard there who used this black stone to cultivate.

"This thing, in some places in the north, more than a hundred years ago, seemed to be called Shini. ”

As soon as Ye Bo's words came out, Yu Zai was suddenly shocked! Then he immediately said to Chi Songzi:

"I think I should take a long trip!"

Chi Songzi was also taken aback by Yu Zai's instant face change, and Yu Zai said, "Master, it's not the ultimate treasure of a fire wizard's cultivation.....

I'm afraid it's "coal"!

It has been said that it is the same thing as Shini, and Shini is a name for coal!

The coal in the south is not nothing, but very little, can not be large-scale, and the north, the northwest wilderness is naturally far from comparable, but the fire-weary people and the two eight gods actually have coal......

To be honest, the performance of coal in iron smelting is not as good as charcoal, but the cost of charcoal consumption is higher than coal, large-scale felling of trees, the speed of planting trees is far less than consumption, although the primitive era did not have so many concerns, but the role of coal, is not only smelting.

Just this thing, if the deal is made, pull back a large number of them, or even create a coal transportation route, it is worth abandoning the spring ploughing this year to go out to buy!

Dayi said to Chi Songzi: "I didn't expect that there are also shini in the south, but can this thing be used as charcoal to burn fires..."

"It is said that the people of the fire-weary country are very fond of eating these things, because they eat these coals, so they can breathe fire out of their mouths, and it turns out that these coals are stones. ”

Yu Zai discussed with the two eight gods, and this kind of charcoal in the field of Biyi can pull a bunch of back for Yu Zai, but Yu Zai really didn't want to use coal to practice, when the energy is a good thing, if you come to practice.... Well, let's take it slowly!

"I doubt ..... right now"

Yu Zai muttered.

"The reason why there is an endless fire in the wilderness of Biyi is that there are coal mines below!"