MarketWatch: Yahoo is withdrawing its remaining operations in China, laying off between 200 and 300 employees and shutting down its Beijing research center. The Beijing office, Yahoo’s only physical presence in mainland China, was mostly made up of engineers and functioned as a research and development center. The layoffs are the latest in a series of cost-cutting measures by CEO Marissa Mayer. Including the latest round, Yahoo has cut 700 to 900 employees since October, mostly in offices outside the U.S.