Shanghai dialect fights to survive in modern China:

As the government maintains a decades-old drive to promote Mandarin Chinese as the official language, banning dialects from media broadcasts and schools, many young people are unable to fluently speak — or fully understand — the native Shanghai tongue.

An influx of migrants from outside Shanghai and the city’s drive to become more international have also combined to water down the local patois.

http://www.montrealgazette.com/news/Shanghai+dialect+fights+survive+modern+China/6207539/story.html