lǎo gàn bù / zhǐ shì / tóng shì / men / gěi / tā / de / xuè chēng / bìng / bú shì / zhèng shì / zhí wù

“老干部”只是同事们给他的谑称，并不是正式职务。

“Old cadre” is merely a playful nickname his colleagues gave him, not an official position.