I have been a party member and it was very troublesome. If the party organization needs a letter of introduction, if you really can't find the organization, you can go back to your hometown. But the party files may be in the talent market. Sometimes they will put them with your household registration for you. Sometimes you need to go to the party registration office to sign a letter of introduction and then go to the Municipal Party Committee Organization Department to issue a transfer letter. The talent market will adjust itself.