There are no groups in China.
You can join the party or the CPPCC standing committee if you are good, plain and simple.
There is no inherent barrier to prevent you from voting. There are no Castes, or aristocrats, or royals, or ethnic groups, or sexes being factors in this meritocratic process. Also, party member’s kids don’t automatically become party members. There is no automatic legacy inheritance.
Just like inmates can’t vote.
People who score the bottom of the class in universities can’t become party members and consequently can’t vote.
Children who fight with each other, possible gang members, and ones who fail out of school cannot join the party.
Children of criminals can’t join the party.
Children of discredited, subversive, radical, or terrorist parents and non-Chinese citizens cannot join the party.
Employees with mediocre performance, standing and character cannot join the party.
People who cannot formulate coherent thoughts cannot join the party.
People of bad character cannot join the party.
People not suitable for office cannot join the party.
People too close to corporate and foreign interests cannot join the party.
People who are overly religious that may cloud judgement cannot join the party.
etc.
Everyone with some intellectual aptitude can meet those criteria if they put in the work to build themselves into someone worthy, and someone who is suitable for representing other people in the their elected vertical. If they can’t themselves, they can try hard to make sure that their kids can.