(Bloomberg) -- Tencent Holdings Ltd. led an $80 billion selloff in some of China’s biggest online names, after the surprise imposition of new gaming curbs revived fears Beijing may again be targeting the country’s giant internet sector.Most Read from BloombergHyperloop One to Shut Down After Failing to Reinvent TransitHarvard Financial Pain Grows as Blavatnik Joins Donor RevoltVilified Zero-Day Options Blamed by Traders for S&P DeclineGiuliani Files for Bankruptcy After $148 Million Defamation L