1. Work pressure and responsibility: As the director of the branch post office, he will face the pressure and responsibility of managing and operating the whole branch post office. He needs to manage the staff, ensure the timely delivery of mail, deal with customers' complaints and problems, and be responsible for the financial and administrative affairs of the post sub-office, which will bring some pressure.

2. Flexible working hours and workload: As the director of the post sub-office, I need to face a very busy work schedule, especially during the peak postal hours, holidays and special activities, and my working hours are not fixed, so I need to adapt to temporary needs and increased workload, which will have a certain impact on my personal life and work balance.