The beginning of the era of one piece of the one piece began with the news of the real existence of the "One Piece" before Roger's execution, and since then countless people have flocked to the sea for the treasure "One Piece" for the sake of the treasure they have made, heading for the new world in the second half of the great voyage! However, no one knows whether what Roger said was just a joke or real, until The War Whitebeard on top proved its authenticity at the last moment.
Some people become pirates for treasure, while others are in search of the truth of history! There was no world government 800 years ago, and there was a gap in the history of One Piece, that is, the "100 years of disappearance", after which the five old stars appeared and created the world government, and blocked all information for the past 100 years, and Robin became the only survivor of that catastrophe. From Robin to Luffy, she has always had only one goal, that is, to explore the truth of history.
It wasn't just the Five Stars who knew the truth about history in One Piece, Roger was someone who had been to Radruff, and he had left that history there, and all the members of Roger's Pirates were actually with him. Reilly himself said that not only did he know, but everyone in Roger's group knew, which naturally included Shanks, Bucky and others, but it did not include the two retinues of the Cat Viper Treasurer and the Duke of Inuyasha, and they did not have a direct superior-subordinate relationship with Reilly!
The red-haired Shanks, who was a trainee in Roger's Pirates, is now one of the four emperors whose great voyage strength is still above Reilly's grandfather, and he is stronger or weaker than Blackbeard. However, the only one in the Four Emperors who can compete with Blackbeard is probably Shanks, right? Such a figure, Whitebeard, did not believe that he would lose his left arm in a small place like the East Sea, let alone anyone else? Shanks said at the time, "I stuck it in the new era." This sentence is very simple, only Luffy has one possibility.
Since Shanks knew the secret about the "vacant 100 years" more than twenty years ago, and everyone has been silent since then, this means that this secret can either not be said for the time being or can never be said. If it is the latter, then Shanks does not need to pin his hopes on Luffy, the straw hat "lent" to Luffy is obviously a step in the plan, and the purpose of this is difficult to guess.