Other than the wizard system route, Lu Zhiyu felt that he could create a leveling system for the spawns based on their blood inheritances. Instead of developing mind power, they would discover the power within their blood, which would then allow them to eventually take on the power of their mythical creature ancestors via atavism!
For the days after that, other than occasionally giving lessons to the apprentices of the wizard tower, Lu Zhiyu dedicated all of his time to this research. Following this train of thought, Lu Zhiyu created a mythical creature template that incorporated many complex special abilities. This template was completely different from incomplete existences, like Sakun, which only had simple abilities and many weaknesses to exploit.