Why don't many companies recruit party member?

This is actually the bias of empirical interviewers, who often like to add geographical restrictions on this basis. Sometimes it may be because the interviewer has come into contact with too many people of the same type in the past (not very flexible, not very flexible), so they all feel the same (provided that they are from party member or the region), so this strange request comes. I met such a person in charge of the employment department before. Later, when I recommended him in an interview, I specially recommended a party member with strong communication skills and good learning ability. As a result, I found that he was basically hired. Therefore, party member is not his concern, but the applicant's ability. He just thinks that he can pass this test (in fact, he knows in his heart that this standard is not 100% effective, and he is actually willing to give up this limit if he can identify the applicant's ability through other standards). Of course, this premise is that HR dares to challenge the restrictive requirements put forward by the employing department and recommend the restricted person to the employing department for a second interview. If that's the only requirement,