The Chinese translation of the 'chav' sub-species in Britain. Usually found congregating around the North Fourth Ring Road of Beijing, the 'xinxin' can often be found answering to such English names as Tracy, or Great Wall Wine, mirroring the fondness among chavs for being named after alcoholic beverages (ex: Chardonnay).
'Dude, that girl is totally a Xinxin.'
'Don't go to Huaxia Jia Yuan in Beijing. Only xinxins live there.'