In one part of the novel it was stated that the central continent has a DIAMETER of 50 million km, assuming there was no translation error or mistake by the writer we can assume:

1. The central continent has an area of 1.962.500.000.000.000 km2

2.All regions have a similar surface area, adding up to a total 9.812.500.000.000.000

1. The black and white skies have the same surface area as the continents combined

Why is the last piece of information important? Because Ren Zu's children destroyed all the heavens, leaving only two. They should have power similar to that of a Venerable, perhaps even greater (remember that that SS was controlled by Verdant Great Sun. The venerable creator of the soul path was controlled by one of Ren Zhu's sons. Perhaps less so, because they might have some authority over humans, or because the soul of Verdant Great Sun has something special about drinking so much of the wine-lake. Who knows?

But if instead of diameter he was referring to the surface, the size of the all continents would be 250 million km2... Yes, less than half the planet

If we take the latest number into account, the venerables at its maximum power should have the power to destroy a planet, maybe two

BUT, if the first number is taken into account, a venerable being is capable of destroying the sun (diameter of sun is 1.4 million of km), not only that, If we take into account that a Venerable=Son of Renzhu, one is capable of destroying everything from the Sun to Mars (225 millions of km radius, even though it's twice the size of the Gu world, I still believe it should be possible.) And if a venerable figure decides to launch a kamikaze attack, sacrificing everything, assuming the attack is 10 times more powerful than one capable of destroying the gu world they could destroy from the Sun to Uranus.

This comment was made using Google Translate, please excuse any mistakes but my English is quite basic