While the Corpse Knight served as his decisive trump card and assault unit, Fang Zhou still needed to create one or more types of Undead Creatures to act as the main force of his army. This was also a necessary preparation to ensure he would have a powerful sequence of Summoned Creatures, ready for combat, immediately after his own advancement to the Bronze Tier.
As far as Fang Zhou knew, the Bronze Tier Ghost he so desired was still a distant and elusive goal. The focus of his upcoming research would likely still need to be on the broader Zombie family. He could either follow the design path of the Corpse Warriors, continuing to build upon them with resources from the Skeleton Series and Flesh and Blood Series, or he could draw from the characteristics of the Zombie race, developing specialized units from their various advanced forms that focused on things like plague, blood, Iron Armor, or even explosions.
