In Wal-Mart in Shanghai, employees work eight hours a day, but promoters are different. Some people take a break from 7 am to 11 pm every day, and it is extended for half an hour in summer. Some people take a six-day break from 7: 11 a.m. to 4: 11 p.m. and the middle shift is from 1: 11 p.m. to 11: 11 p.m. Moreover, it is six yuan for employees to eat lunch and eight yuan for promoters. And the cashier is working for six hours.