Forever young: Chinese 'dancing aunties' jazz it up 55-year-old retiree Zhang Yongli and dozens of neighbours liven up a Shanghai park by doing the jitterbug, part of a public dance craze that has become China's national pastime. Every day, an estimated more than 100 million people -- dubbed "dancing aunties" as they are primarily older women -- take over squares and parks to tango, waltz, and grind out everything from the flamenco to Chinese traditional dance. IMAGES AND SOUNDBITES