Her lifespan and strength will increase to the peak. But she is also bound to that world. She can't come out of the world on her own. Only Wang Wei can let her come out of the world if he wants.
Wang Wei inspected the world he created from the outside without using his spiritual will. He inspected by activating his spiritual will in the sun. Now the sun in that world can be said to be his clone as it's made from everything of Wang Wei.
From the sun's perception, Wang Wei found no problems in the world. Then he looked at the Qing Yue who was still sleeping as her origin began to change to fit the world.
Wang Wei(sun) looked around him and found there's a barrier that blocks everything from the outside and at the same time blocks anything from escaping this world.
Only he can enter and exit the world he created. Wang Wei's spiritual will permeates everything in this space without disturbing the sleeping Qing Yue.
