The Holy Wave Race was a race formed after the Grand Duke betrayed the human race back then. They retained some of the inherent thoughts of the human race in the past.
For example, hierarchy.
In reality, it was fine in Fenghai County and other counties. Because they were either enclaves or exclaves, the sense of hierarchy wasn't that clear and strict. However, it wasn't the case in the Grand Imperial Capital Region.
Due to the fact that the Holy Wave Race was relatively intact as a whole and shared common characteristics with the Grand Imperial Capital Region, the sense of hierarchy was equally intense. It was deeply ingrained in the consciousness of every member of the race.
The members of the Holy Wave Race were divided into six levels according to their family registry, with the upper two levels being known as the nobles, the middle two as soldiers, and the bottom two were slaves.