Interesting development.
Su luxia often ends stories with her simply winning while wearing a smug face before moving on to the next mission. She technically accomplished her mission but now she's worried. For a good reason too.
Cultivation main characters can reach overpowered reality warping levels. Space and time won't mean anything to him if you give him enough time to cultivate. If this were any of the other low powered worlds, then the danger is low. But an obsessed self-aware cultivation MC that's as manipulative and deceptive as Su luxia is some scary shit.
I get the feeling that even if they erased that world, Jing would find a way to jump to another.