One Piece: Hundreds of Millions of Times the Experience Increase

Xia Ming traveled to the world of pirates, and with his own efforts, he finally became a recruit of the elite battalion.
It's just that his talent is still too low. For three years in the elite camp, he was the tail of the crane.
Just when his grades were too poor and he was about to be kicked out of the elite camp, the billions of experience system was activated!
One day of exercise, hundreds of millions of experience gains, his physique is instantly top!
One day of practicing swordsmanship, with hundreds of millions of experience gains, he suddenly became a great swordsman!
Killing one enemy will gain hundreds of millions of experience, and he will easily become a master of battle!
Practicing the Devil Fruit ability and gaining hundreds of millions of experience, he immediately awakened!
And just like that... a strongest navy was born! ! !