"After twenty years of longing for the moon's radiance, nine shadows are cast as the sun rises in the east..." Sig repeated Oden's Wife's prophetic poem.
"Huh? What did you say?" Robin was also looking at the scene in surprise, and didn't hear what Sig said because she was distracted.
"So that's how it is... Nine Shadows... Twenty years... So it wasn't a prophecy, but... a cycle?" Sig muttered to himself.
Sig had realized that Oden's Wife Shi left behind might not have been a prophecy at all, and even the power of the "Time-Time Fruit" might not contain any prophecy at all—which explained why Yunlai, or rather Old John, had no prophetic abilities for so long!
Sig apologized to Yunlai in his heart, realizing he had been secretly cursing him as a good-for-nothing...
What Oden's Wife death was not the future she saw through the "Time-Time Fruit," but "one thing" she already knew eight hundred years ago, when she decided to travel through time!
That is, after eight hundred years, a special astronomical phenomenon will occur in the galaxy where Earth is located...
To verify this, Sig once again spun Blue Star rapidly, and the surrounding satellites also quickly rotated and revolved... Sure enough, after Blue Star had rotated about 800 times 365 times, the phenomenon of "Nine Shadows Shine Together" reappeared!
This astronomical phenomenon should bring about some changes to Earth. Sig, through the simulation just now, has also realized that the cycle of this phenomenon is exactly eight hundred years.
Although it doesn't show the positions of the Sun and Moon, Ohara's celestial model is incredibly accurate in simulating the movement of celestial bodies!
This is probably the real reason why the World Government is determined to destroy Ohara...
This phenomenon eight hundred years ago brought about a certain change to the world, and the great changes that followed may all be related to it—the destruction of the Great Kingdom, the rise of the Twenty Nations to dominate the world, the closure of Wano Country to its own borders, Joy Boy becoming a taboo, and the Fish-Man Race's dream of migrating to the sun vanishing...
The reason Oden's Wife traveled to eight hundred years in the future was probably because she had already concluded that the world situation would be difficult to reverse before the next "Nine Shadows Shine Together" occurred!
As for Oden's Wife left behind before her death, it was not a prophecy. The Nine Shadows are neither the Nine Red Scabbards nor nine external saviors, but rather... the nine stars converging before our eyes.
This also proves once again that Wano Country and the Moon person are definitely on the same side, because the Kozuki Clan's crest is "Nine Shadows Shine Together" as seen from the Moon!
Perhaps Oden's Wife herself wasn't sure whether Wano Country would open its borders or whether Joy Boy's successor would change the world the next time "Nine Shadows Shine Together" occurred. However, she knew that if this phenomenon happened again, the world order could be reshaped. So she left this poem to encourage the people of Wano Country!
In other words...
If we take this as a "prophecy," then we have truly lost, because it is merely an opportunity; doing nothing will change nothing.
"No wonder someone like Roger would lament that he 'came too early.'" Sig finally understood Roger's regret.
If Roger believed in a "prophecy" and thus thought he "arrived too early" and "could not change the world," then the title of "One Piece" would be undeserved.
But...
If Roger understood that the next world-changing astronomical phenomenon wouldn't occur for more than twenty years, and that he only had less than a year to live, then his "regret" would be understandable.
After all, no matter how powerful or defiant the One Piece King is, he can't go up to the heavens and move the stars!
Of course, this also illustrates another point—the "Nine Shadows Shine Together" before our eyes is not merely a symbolic event, but will truly trigger some kind of major change.
As for what major changes are involved...
There is not enough information at the moment, but Sig estimates that it is either related to magnetic fields or gravity, and it should be one of these two!
The former, in particular, is the most suspicious!
On Earth...
Because of the presence of Seastone Factor, the connection between the magnetic field and the weather is closer. Disorder in the magnetic field will bring about some extreme weather events that defy all laws.
In the theory of Visalia meteorology, this is because the magnetic field drives the movement of Seastone Factor in the air, land, and ocean, and the density and flow patterns of Seastone Factor lead to extreme climate changes.
If it truly is a sudden change in the magnetic field, then Earth will inevitably undergo tremendous changes...
"What are you talking about?" Robin looked at the rambling guy with a puzzled expression.
Although it looked strange, Robin actually felt a bit more familiar with it— Sig looked somewhat like those eccentric scholars of Ohara when they were lost in their own worlds!
"What a pity..." Sig sighed, then looked at Robin with a frustrated expression. "Why didn't you read more books on astronomy?"
Robin:...
This was the first time Robin had ever been criticized for "not having enough knowledge"!
But you're so eager to consult an archaeologist about astronomical knowledge, don't you think there's something wrong with you? -- Robin's comment sounded like a sarcastic remark.
"What do you mean by this astronomical phenomenon? Why aren't the Sun and Moon moving?" Robin asked curiously.
Robin initially thought the ability to control dreams was rather lewd, but now she suddenly realizes that it actually has scientific value!
Sig rolled his eyes and said, "I need to know how to move too! After Ohara was destroyed, astronomical knowledge about the ocean has basically disappeared."
That's right, what Sig is simulating now is ultimately just an "illusion," otherwise, how could the Sun, Earth, and the moon always be in a straight line?
Only the blue planet and eight satellites are in motion, and the patterns of their motion are recorded in the astronomical model of Ohara, which should be quite accurate if nothing unexpected happens.
Unfortunately, the model doesn't have the Sun and Moon!
Sig simply assumed that the Sun and Moon were always in a straight line with the blue planet to verify the regularity of the celestial model.
However, Sig also gained quite a bit.
Sig at least roughly understood why Roger felt he had "arrived too early" after arriving in Laugh Tale.
The "Sun's Harmony" is the key to Laugh Tale, but even if we don't get to see it, we can at least use astronomical knowledge to deduce the result.
But "Nine Shadows Shine Together" is different. It doesn't indicate anything; the key is the kind of change it will trigger. Roger can only sigh at the "stars," even if he knows when "Nine Shadows Shine Together" will happen, it's useless.
As for what the "Nine Shadows Shine Together" scene will ultimately lead to, Sig cannot yet predict. However, barring any unforeseen circumstances, the events that will occur should be recorded in Laugh Tale.
"Nine Shadows Shine Together" is equivalent to a "Sun's Harmony" in which eight satellites are aligned with and evenly orbit the planet. This is obviously much rarer than a "Sun's Harmony," and its cycle is approximately eight hundred years.
The "Sun's Harmony," which points to Laugh Tale's location, has one less difficult condition to achieve than the "Nine Shadows Shine Together," meaning its cycle is much shorter, occurring every few years. At that time, combining the coordinates of the four islands will indicate Laugh Tale's location.
Once you arrive in Laugh Tale, you will naturally know what will happen during the "Nine Shadows Shine Together" event, and you will be able to prepare in advance.
Of course, exploring Laugh Tale wasn't the only path for Sig.
Since Sig has determined that the phenomena that will occur are nothing more than related to "magnetic field" or "gravity", then as long as he can obtain enough information in this regard, he will be able to deduce the result.
The World Government fears the spread of this kind of knowledge, but in the world of One Piece, there is another carrier of "natural knowledge," namely Devil Fruit.
For Sig, as long as he finds the "Magnet-Magnet Fruit" and the "Heavy-Heavy Fruit," he can deduce the result!