On the web

Highlights from chinadaily.com.cn

Photo: US first lady Michelle Obama joins students for a Bollywood dance in the State Dining Room at the White House in November 2013. International Dance Day, introduced in 1982, is celebrated annually on April 29 - the birthday of French dancer and ballet master Jean-Georges Noverre (17271810). The main purpose is to draw wider public attention to the art of dance.

Buzzword: "Peekaboo" is when you hide your eyes and then slowly reveal them, producing laughter from a baby. One theory on why babies enjoy peekaboo is that they are surprised when things return to view after being hidden. It helps them to test and retest a fundamental principle of existence - that items still exist even when invisible.