Because whether certain entries have produced a Jade Scroll or not is key information that often determines the composition of a group of entries, and such scattered information is very difficult to inquire about; it must be gradually recorded through a legacy handed down over ten thousand years.
Furthermore...
The Bai Family has purchased many entry jade slips over the years for the purpose that as soon as a member of the Bai Family randomly obtains a special key entry from a powerful group of entries, they can immediately fill in the matching group of entries!
However, these entry jade slips are all inside the Bai Family Patriarch's Storage Ring.
Fortunately, they are not in the hands of the ancestor of the Bai Family, Taoist Bai He; otherwise, he would have felt some heartache.
Once the Bai Family Patriarch's Storage Ring is cracked, these entry jade slips will also become the foundation of the Chao Tian Sect.