Do KFC or McDonald's only recruit part-time students? Is there an age limit?

At least 18, most of them are college students with high school diplomas or local hukou. Bring your 2-inch photo, and if it is a part-time job, bring your student ID card. You need to sign a one-year contract (part-time hourly workers can't sign a formal labor contract, but the restaurant certainly doesn't want those who come to leave within a few days), and you must work more than four days a week, six hours a day, with a health certificate and a livelihood salary card.