Even with the Order's presence, the competition for resources and dominance was still very much volatile among cultivating organizations and it was even more so for those at the bottom. They would compete both openly and in the shadows and the competition was as ruthless as it could get.
It wouldn't be a surprise for some genius from those families 'disappearing' when he or she was out on a mission more so for those who had received some form of training from the Order and showed some potential.
The Murong family was insignificant before, but it had now joined in on the game the moment they got promoted.
While they were happy to become a ranked family, there was also the other side. The dangers of finally being seen.
If Murong Yan wanted a safe room to grow and realize her potential, gaining recognition from the Order with her performance was the best way since the Murong family wasn't anywhere near capable of shielding her.