Why does Pupu only work four hours part-time?

The working hours of part-time workers shall not exceed 4 hours a day. Park Park's part-time job is a part-time job. Both parties may not conclude a written labor contract, and the labor rights of employees and the requirements of the employer for employees may be agreed orally. Part-time job is a part-time employment method. According to Article 68 of the Labor Contract Law of People's Republic of China (PRC), part-time employment refers to a form of employment in which the average working hours in the same employer are no more than four hours per day and the cumulative working hours per week are no more than twenty-four hours.