Grand Intermittence Pill was extremely well-known for its miraculous ability in allowing one to regrow even severed limbs. But naturally, it was an extremely difficult pill to forge as well.
Even among grade-7 pills, it could be considered one of the more advanced ones. It would be difficult for even an average 7-star apothecary to forge it, so how could they possibly succeed?
For all Upper Nine Paths occupations, the difference between each rank became exponentially larger the higher one climbed.
Even though it was only a single rank of difference between 6-star and 7-star, it was like the difference between a Saint and a Transcendent Mortal. There was an unbreachable gap between the two.
In fact, even within the rank itself, there was a vast difference in the capability between low-tier and pinnacle.