After the arrangement of the half-plane was almost complete, it was time to set up the body modification device.
The body modification device wasn't a precise instrument but merely a pool filled with spiritual energy.
On the stable ground, Su Yu dug a pool with a length and width of 10 meters each, and the pool was about 3 meters deep.
Su Yu injected condensed liquid spiritual energy into the pool until it was filled to the brim.
Then, he cast a spell to isolate the pool from the outside space so that the spiritual energy inside the pool wouldn't spill out.
The body modification device only required this spiritual energy pool, no instruments were needed.
However, Holy Song set up more than a dozen monitoring and analyzing instruments beside the pool, which could analyze the physiological state and various data indicators of those entering the pool.
The whole process of digging the pool was less than 10 minutes.
