The family background of a Shanghai-based internet celebrity is no longer a mystery, after a fine imposed for insider trading accidentally gave away the details. Qin Fen, 34, first came to public attention for his calm reaction to crashing a multimillion dollar limited-edition Ferrari some seven years ago. He had since become well-known for his lavish spending and fleet of supercars, with more than 10 million followers on Chinese social media platform Weibo. There had been intense speculation online that Qing Fen was from a political family but that appears not to be the case. Qin, who goes by the…