The ghost bone of ten thousand infants was an evil celestial device. It was very easy to make it. One only needed to find a baby born in a Yin year, Yin month, yin day, and Yin hour and kill the baby. Then, the celestial device could be made. However, the celestial device made in this way was just a melting device with no power. Besides, after the refining, only a piece of bone would be left of the baby. It could be a skull, a finger, or a leg bone. In any case, any bone in the body could become this magical weapon.
After refining this bone, the next thing to do was to integrate the ghost baby into it. However, this ghost baby didn't mean that you could kill a baby, extract the baby's soul, and then refine it. It was impossible. The reason why the ghost baby was so powerful was that each ghost baby had to be refined by the souls of 100 babies together to become a ghost baby.
