Facebook's best-selling author-in-residence and part-time COO Sheryl Sandberg is on another publicity tour. Don't take our word for it: she uploaded a snap that contains 14 separate images of her face as proof. Remind us again, who's doing her job at Facebook when she isn't?

The photo op, just one of many at Peking University, must have been a good warm-up for Sandberg's next stop on the eternal Lean In goodwill tour: speaking before 2,000 eager fans in Montana, perhaps all wondering how you can operate as a crucial executive at a publicly traded company with over a billion users and also travel the world self-promoting.