After the end of the War on top, the world government announced the abolition of the "Seven Martial Seas System under the King", and at this time the members of the Seven Martial Seas were Hawkeye, Edward. Wilbur (Whitebeard II), Bucky and The Empress.

How was the "Seven Martial Seas System under the King" established, because the "Era of Sea Thieves" came, in order to balance, so some pirates would be recruited to "control the yi with yi".
Why abolish this system? There are two main reasons, on the one hand, because individual members of the Seven Martial Seas have repeatedly violated the prohibition by virtue of their identity as the Seven Martial Seas. For example, the theft of Klockdahl and Doflamingo infuriated the kings of the member states. There is also Shi Ping, Blackbeard and Luo who defected from the Seven Martial Seas.
On the other hand, the invention of pacifism can add a lot of combat power to the navy, although it is not enough to deal with the pirates with bounties of hundreds of millions, but it is enough to crush the pirates below 100 million.
Since the world government wants to abolish the Seven Martial Seas, it must prove to the world that the strength of the navy is enough to eliminate pirates and defend the world. How to prove their strength, naturally is to "kill one to make an example", the greater the fame of this person, the more it is enough to deter people's hearts, if you take the Seven Wuhai shot, then who among these four people will be the best candidate for naval targets?
Hawkeye
Hawkeye is the world's largest sword master, famous enough, if the Navy catches Hawkeye, it will naturally cause a sensation in the world, but Hawkeye will not be caught by the Navy.
On the one hand, Hawkeye is a goal set for Sauron, and Hawkeye's blood bar will always be full of blood until he and Sauron complete the agreement. If Hawkeye has any accidents, Sauron will not be able to win even if Hawkeye wins, and how can he claim to be "the world's largest swordsman".
On the other hand, Hawkeye is alone, a loner, although he has his own territory, but he has no worries, he will go, he will flee, the sea is vast, and it is not easy for the navy to find Hawkeye. Even with pacifists, the Navy does not spend manpower, materials and time looking for a Hawkeye that will not harm the world.
Therefore, Hawkeye is the most famous, but it is the safest. The reason why Hawkeye is so calm, not panicked, the strength is there.
Edward. Wimble
After Whitebeard's death, Edward. Wimble claimed to be Whitebeard II, of course, this is also the two of them talking to themselves, whether it is true or false only Whitebeard and Miss Barkin know best, and one is dead.
The other is a bunch of bullies, saying that to inherit Whitebeard's legacy, it is a mercenary role, and there is no threat to the world government, so There is no danger to Wimble.
Female Emperor
The female emperor also behaved very calmly, and was able to sit in the position of the Seven Martial Seas because she was strong enough, and there was no need to panic when leaving, because she was still strong.
In addition to the title of "the world's largest beauty", the female emperor is also the king of the Amazon lily country, and these two names are not enough to shock people's hearts.
Although the female emperor is not panicked, if the navy moves the truth, the female emperor is the most likely person to have an accident, because behind her is a country, if she really starts a war, will she ignore the people and run away alone? This is not good.
Moreover, in Drake's secret phone call with Kirby, it can be learned that Kirby is leading his troops to Daughter Island to prepare to arrest the Pirate Queen. Therefore, although the female emperor did not panic, she was the easiest person to fall into the hands of the navy.
However, for Luffy's little fan's "Kirby", nothing will happen to the female emperor's side.
Bucky
The position of the Seven Martial Seas had not yet been secured, and the plan to collect wealth had only really begun, and the occurrence of such a thing was a blow to Bucky.
So Bucky was the most alarmed of these guys because of fear? Or is it a broken dream? Of these four, Bucky was the Navy's best candidate.
Bucky would be targeted by the Navy for a number of reasons, one: Roger's former crew. Two: The red hair of the four emperors is small. Three: The future nemesis of One Piece.
When he escaped from prison, Bucky became famous, attracted many pirates, and made a lot of noise in the war on top. Therefore, Bucky's reputation is big enough, and he is the weakest among these people, and he is easy to catch.
In summary, after the abolition of the "Seven Martial Seas System under the King", the female emperor and Bucky were the target figures of the navy, and although the female emperor did not panic, her family was too big to get out. But then again, even if the female emperor is captured, Luffy will ignore it? No matter what, the female emperor is a person who pays her heart to Luffy. Not to mention that there is also a "little fan" inner response.
Although Bucky is not afraid, because his "prestige" is outside, the Navy is likely to borrow his head, not to mention that the current admiral is a tough and ruthless role. Bucky doesn't panic, who panics?