A man (L) looks at a bulletin board as Chinese relatives of passengers on the missing Malaysia Airlines flight MH370 have a meeting at the Metro Park Hotel in Beijing on April 23, 2014. The hunt for physical evidence that the Malaysia Airlines jet crashed in the Indian Ocean more than three weeks ago has turned up nothing, despite a massive operation involving seven countries and repeated sightings of suspected debris.      AFP PHOTO / WANG ZHAO        (Photo credit should read WANG ZHAO/AFP via Getty Images)