Zhang Yifen has left her vice presidential positions at Alibaba Group and China Yahoo, reports Beijing Business Today quoting an unnamed insider. Rumors are circulating that Zhang will move to Yahoo's (Nasdaq: YHOO) Taiwanese subsidiary yahoo.com.tw, while an Alibaba Group insider said Zhang will remain at Alibaba Group. China Yahoo is considering a company restructure including department mergers, employee layoffs, and staff transfers to Alibaba Group, reports Beijing Morning Post.