This was not, in fact, a real backdoor.
To put it more precisely, it was an auxiliary function meant to help cultivators assess their physical condition, treat internal injuries, and gain a deeper understanding of their own bodies. Without knowing one’s specific state—or, as a teacher, knowing the specific state of one’s students—even the most capable instructor would be unable to provide guidance, and any hope for self-improvement or progress would be out of the question.
Had it been anyone else, they would have been overjoyed to swallow the pill and refine it on the spot. Director Chen certainly would not have minded providing protection; receiving pointers from a Peak Purple Mansion Realizer, along with assistance in healing hidden wounds and purging Demonic Qi, would have been an immense boon.
Chapter 618