US President Barack Obama will start his four-day China visit Sunday in Shanghai, and the highlight of his visit in the eastern city will be broadcast live by Xinhuanet, the online news service of the Xinhua News Agency.

This is Obama's first visit to China since he took office in the White House more than a year ago.

Obama is scheduled to meet with Chinese youth on Monday in Shanghai, during which he will pick up a number of questions out of more than 3,200 put forward by China's Internet users over the past two days.

The whole event will be broadcast live online, according to the Xinhuanet.

Obama will arrive in Beijing on Monday afternoon.