After graduating, Cheng took an employment exam and was assigned to Hua Nan Bank, where he worked until just seven years ago. At the time, Hua Nan encouraged its employees to seek higher education. After working for two years, employees who tested into university could take leave to attend and have their positions held for them.
高商畢業後，鄭清文參加就業考試，分發到華南銀行，直到 7 年前才從銀行界退休，當時華南銀行獎勵員工進修，只要任滿兩年，考上大學可辦理留職停薪。