"i hope that you can ask more serious questions" he said. adding to the mystery: government sensors are blocking search results for xi's name. the intrigue began after xi canceled a meeting set for last wednesday with secretary of state hillary clinton. state department staff members who were in beijing to meet with chinese leadership were told around 11:00 the night before that the secretary's meeting with mr. xi was canceled. the chinese ministry cited unexpected scheduling reasons. his latest political twist comes at a crucial point. china's fast-growing economy is slowing down and chinese authorities are concerned with keeping control as the new government takes over, scott. >> pelley: margaret, do the people you're talking to at the state department know what has happened to xi? >> they're curious. they were give an reason for xi's cancellation but they were