An engineer conducts a bike-frame test at the Xidesheng Bicycle Co in Shenzhen, Guangdong province. Riders share their favorite routes, health tips or arrange meet-ups with others on lifestyle and fashion opinion-sharing platform Xiaohongshu and microblogging site Sina Weibo. On Xiaohongshu, there are more than 2.5 million posts with the cycling tag, and on Weibo, the hashtag has been viewed …