The jade slab underneath the feet of the middle-aged man was called 'Green-Shadow Wind-Slaughtering Talisman'. It was a natal talisman treasure crafted by a Gold Core Elder of Heavenly Spirit Sect using a secret technique. It was made out of a huge amount of rare and precious materials, tempered with one's blood essence and soul, and eventually becoming the only and the most powerful magical item for the Gold Core Talisman Master of Heavenly Spirit Sect.