When a citizen dies, each citizen can designate a child in their will to inherit their level in advance.
However, this inheritance is progressively reduced.
For example, the child of a Fourth Level Citizen can make a will to pass their level to a particular child, making them a Third Level Citizen.
A Third Level Citizen's child can then inherit as a Second Level.
And so forth, the lowest level is First Level, which will not decline further.
For instance, Ju Qingmeng's father was a Second Level Citizen, while her mother was a First Level Citizen.
She was born a First Level Citizen, but later upgraded to a Second Level Citizen by earning a lot of points through excellent performance in Chongyi County's vocational high school.
As for Ma Xiaoling's situation, it was somewhat special.
