Heilongjiang

'Happy Dancing' routine boosts fitness in fast-ageing China

Hundreds of dancers twirl in unison by a riverside in northeastern China, thrusting hips and shimmying shoulders in an unusual but beloved routine that has taken the country by storm.

China has a vibrant public square-dancing culture, with ranks of retirees thronging city plazas at dawn and dusk to groove in time to thumping electronic music.