What does Foxconn mean by making up lessons during the Spring Festival?

Foxconn's Spring Festival make-up class means to arrange employees to go to work during the Spring Festival. According to relevant public information, Foxconn will accumulate a large number of orders during the Spring Festival and the company's production capacity is limited. In order to meet the company's production needs, employees are arranged to make up shifts during the Spring Festival to meet the company's production needs. The overtime pay is paid according to normal working hours and subsidies are provided.