Luo Lang Swann is the king of the North Sea, and has been in charge of the North Sea for many years. His power is deeply rooted and many people rely on him for their livelihood.

So.

Even if Du Ge took his horn of the sea, and killed him unexpectedly, he did not truly conquer Luo Lang Swann's North Sea fleet.

It's like a big shot going out, and then being stabbed by a little punk, and having his weapon taken away. The little punk raises the big shot's weapon and says to everyone, "From now on, I am the big shot."