https://www.businessinsider.com/chinas-middle-class-is-exploding-2016-8
https://www.mckinsey.com/industries/retail/our-insights/mapping-chinas-middle-class
https://www.sixthtone.com/news/1000610/chinas-middle-class-comes-with-new-characteristics
http://www.chinadaily.com.cn/china/2017-10/02/content_32752727.htm
now, all the above reports were written before the economic turmoil, starting from a few months ago
