Working 7 days a week and 11 hours a day.711 is the working day in the catering industry, which involves waking up early to buy ingredients and leaving guests late at night. The restaurant industry has people coming to eat every day and can't take a break. So 711 work system is to work 7 days a week, a day work 11 hours. 711 work system full load without rest work method, work and personal physical and mental health will have a negative impact.