According to Bloomberg, citing anonymous sources, China’s Alibaba is currently in talks with a state-owned conglomerate to sell its 30 percent stake in the social network Weibo. Beijing continues to restrain the influence of local tech giants, this time affecting social media. The potential buyer is Shanghai Media Group (SMG). Over the years, Alibaba and its affiliates have amassed a vast portfolio of media assets, including print and online media, television, social media and advertising agencies. Worried about Alibaba’s growing influence, Beijing wants the tech giant to sell some of those assets. On condition of anonymity, Bloomberg sources said that…