Bloomberg Businessweek

“What kind of oil should we buy?” Luo Xiaohua shouts to her cousin from the cooking oil aisle in Yonghui Supermarket in the heart of Chongqing, a rising Chinese megacity. Luo, 50, is the quintessential Chinese shopper. She earns $3,250 a year and has an elementary education. She’s fiercely opinionated about her purchases.