The condition for Su Xiao helping Sha break out was to release all the tenants. Is it Su Xiao's conscience waking up? Of course not, the lives of these tenants are irrelevant to him.
Ask yourself, if all these tenants escape, who would be the angriest? The answer is Alice.
Who knows how many years Alice spent imprisoning so many strong individuals on one level? Some were even imprisoned successfully with the help of the ancient castle. It's Alice's labor of love and her hobby—watching those once mighty beings who roamed the Void now confined in tiny rooms, some even wagging their tails and begging her.
Alice, who was once imprisoned herself, thoroughly enjoys this feeling. She treats these powerful individuals as her collection, as for the tenants gradually breaking the seals through transactions with gamers to regain freedom, this is utterly impossible.
