Google executives seem to keep leaving for companies based in China. Last August Hugo Barra left his post at Google as vice president of Android to become VP of cell phone maker Xiaomi Global. In May Baidu snatched up Deep learning guru Andrew Ng, who was leading Google’s Brain project. And last week Alibaba nabbed Jane Penner, who was heading up Google’s Investor Relations department. That’s three employees in a year to leave Google for China’s growing tech sector.