As Shein heads towards IPO, its Chinese billionaire founder stays under cloak of secrecyWhile it has become a trend in recent years for tech entrepreneurs in China to keep a low profile, the lengths that the Shein CEO – also known as Sky Xu or Chris Xu – has taken to avoid personal publicity stand out among his peers.The company has never published any photos of him. Neither has he made any public speeches throughout his career, even as Shein became an increasingly familiar e-commerce brand arou...