The most fundamental guarantee is safety!
Within the space of Lv Zhong's Great Annihilation Pearl, even if Bai Suzhen and Xiaoqing destroyed the "Bound by Three Lifetimes" pact, the Heavenly Dao from the outside world could not harm them.
Bai Suzhen and Xiaoqing had yet to respond, but Bai Susu on the side exclaimed with excitement, "That's great, older sister, Xiaoqing, the space within our master's magical treasure is extremely vast and boundless, and the spiritual energy is incredibly dense. Most importantly, there's an exceptionally strong time acceleration effect. If you stay inside, you'll definitely outpace that Fahai and Xu Xian in a short amount of time..."
Bai Susu was so excited because if her newly acknowledged sisters could also enter Lv Zhong's Great Annihilation Pearl for cultivation, then she could be with them all the time. She had always been very lonely.