In fact, not only the dozens of Golden Immortals who entered the Abandoned Land, but also many Golden Immortals from other sects in the hall might experience a substantial increase in power.
After all, the number of super experts and half-step immortals in the Abandoned Land is considerable. If they can find beings whose Dao Principles resonate with theirs, allowing them to attach the principles to their own Dao and advance to immortality, these Golden Immortals' cultivation will naturally rise with it.
Moreover, the most important point is that whether or not these super experts and half-step immortals in the Abandoned Land resonate with the laws of the sects' Golden Immortals does not affect their proving the Dao.