North Sea
Leaving aside the portion of cultivation resources categorized as "special rewards," the four most important rewards—aside from the "one hundred drops of pure divine power" that matched part of Bibi Dong's ultimate rewards—were "Bo Saixi's insight into Spiritual Power manipulation," "Bo Saixi's insight into Soul Power manipulation," and "Bo Saixi's insight into mastering Martial Soul origin power."
As a genius in Spiritual Power, Youshen lacked practical combat experience in utilizing Spiritual Power. Although he was capable of developing advanced secret arts of Spiritual Power far beyond the recognition of people on Douluo Continent, such as the Star Soul Formula, his application of them remained somewhat crude.
Chapter 165