According to the deductions of these two, having all six soul bones is the bare minimum required to ascend to godhood at level 100 on the Douluo Continent, as this forms the foundation of divine equipment.
Naturally, the higher the age of the soul bones used to forge divine equipment, the better. At a bare minimum, they should probably not be lower than the Ten-Thousand-Year Level.
Take Tang San's fifty-thousand-year-old Wisdom-Refining Head Soul Bone for example, or the Sea God Helmet crafted by the Sea God Douluo from a thirty-thousand-year-old head soul bone.
Chapter 1162