Although he had already decided to search for the isolated Origin, before setting out, Du You first needed to sort out his spoils. First, he opened the Desert Coffin to see what was left inside.
As the layers of the Desert Coffin were opened, Du You gradually dispersed the Power of Destruction he had left within.
If this force were left behind, it would not only be repelled by this world. If someone were to utilize this power, or bring an object carrying the destructive power into another world, it would create trouble for him.
If it were taken to Earth, the trouble would be even greater. Therefore, each time Du You used the destructive power, he would cleanse it thoroughly. Only in the case of that completely obliterated world last time, did Du You not need to clean it. Because his destructive power would be assimilated by the world-destroying forces, there was no need for him to clean it.
