C199 The Heart of Red Stone
This was the transfer of gravity. Diwu Gudu used his own fire cave to transfer the gravity from Princess Loongbing's body to his. In this way, Princess Loongbing seemed to be in the void, without any gravity pulling her.
To Diwu Gudu, not to mention two sets of gravity, even if it was a thousand sets, it would not be a problem. But if it was a Great Sage Stage