Alex went through the few attempts that Bluedoor had made to fix Graham's issue.
Since Alex's father's body wasn't abnormal or affected by some disease, it was impossible to heal it normally. As such, one had to use something strong that could affect the body permanently.
That was what Bluedoor had figured out very quickly, so everything he tried had followed that method.
The first thing Bluedoor had attempted was to erase the minute channels on the outside of Graham's meridians. Either he or his wife had made the pill to permanently destroy them.
Graham had eaten the pill, and the channels in his meridians had been destroyed for a couple of weeks, but as he cultivated and healed, the channels had come right back. The changes hadn't been permanent at all.
