Dividing
If you were in the Third Heaven and descended to the First, it would amplify three times! If you were in the Fourth Heaven, it would amplify four times!
Of course, the worst part was that these amplifications were not all created equally. There was a division amongst Heavens for a reason.
If someone in a Third Heaven descended to the Second to endure a tribulation, the resulting strength would be far greater than someone originally from a Second Heaven descending to the First.
These rules and regulations kept a certain balance in the True Martial World, and it also made many not dare to attempt to find a way to circumvent the rules.
Ryu, then, had several advantages.
First, he was from a smaller world. Second, he hadn't been in the First Heaven for long. And third, the judgment of the Seventh Heaven had to go through six layers of Heavens to reach him.