When the jade box originally underwent blood recognition, it was purposely bound to a person with a Five-Element Spiritual Root and mediocre aptitude—someone who wasn't even a family disciple, but rather a disciple selected from the mortal realm.
That disciple was also cautious. At first, he hadn't noticed anything peculiar about the jade box, simply using it as a storage pouch. Once, he accidentally placed inside a jade pillar he had picked up at a market fair. The outer layer of the jade pillar was made of absolute-spirit stone; when cracked open, it revealed a complete set of musical cultivation techniques carved into the pillar.
The jade box's collection happened to lack this, so it couldn't resist taking in the jade pillar, and in return, it gave the little disciple a much-needed Foundation Establishment Pill. This act was like opening the door to a brand-new world for the other party.
Chapter 938