Whether they were true vampires or humans cultivating Bloody Glory, those of low and middle ranks could increase their strength by devouring the life force of others. But for vampires to advance to the high ranks, they could only progress by condensing a Blood Core.
The various vampire clans were born with different physical constitutions. Although they could cultivate the secret methods of other clans across family lines, their progress would inevitably be slower than with their own clan's secret methods. Thus, while some vampires practiced multiple vampire secret methods, they remained a minority.
Most vampires condensed only one Bloody Vortex. Like human Knights, their rank was determined by the strength of their blood energy. It was not like Bloody Glory, created by Protagoras, where opening each Bloody Vortex allowed one to advance a rank.
For vampires, advancing to the high ranks was, in form, very simple. As long as they compressed and condensed a Bloody Vortex into a Blood Core, they could advance to the high ranks.
Vampires divided the high ranks into two stages. The Thirteenth to Fifteenth Orders were called Baron, while the Sixteenth to Eighteenth Orders were called Viscount.
Byron truly granted titles to the high-ranking members of his clan. No title was granted before one entered the high ranks; that was a tradition of the vampire empire.
After advancing to the high ranks, vampires placed greater importance on the purity of their blood energy. They no longer casually devoured prey below their own Transcendence rank, only occasionally taking a little as an after-dinner dessert. Unrestrained, frenzied devouring of life force could easily cause them to fall into monsters. The reason vampires also had the nickname bloodsuckers was because they really could degenerate into inhuman monsters, lose their human forms, and forfeit all reason.
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