Sikou Yao took out four spatial systems, each resembling a green bamboo jade pendant. With a flick of her wrist, the four spatial systems flew like living creatures, directly in front of the four treasures.
The four treasures reached out to catch them and quickly did as Sikou Yao had instructed, cutting their fingertips and dripping blood into the systems.
Upon receiving the blood of the four treasures, the spatial systems instantly absorbed it.
The next moment, the spatial systems "whooshed" into the upper dantian of the four treasures, and simultaneously, a voice rang in their minds, "System bonding successful!"
The upper dantian, also known as the Niwan Palace, is the abode of the gods and the location of a person's Primordial Soul.
Being bound to the soul, the spatial systems naturally resided there as well.