Venkatesh Rao@vgrAfter blaring loudspeakers in parks, now China has line-dancing grandmas. Heh #SecondWorldProblemsQuote TweetZhan Li @thezhanly·Aug 6, 2016Replying to @vgrmay you have an interesting retirement http://m.huffpost.com/us/entry/6938894…5:10 AM · Aug 6, 20162 Likes