Xi urged the multi-billionaire to "continue to play an active role in promoting China-US economic and trade cooperation", the official Xinhua news agency said.
'There is never a justification for violence. No excuses, no exceptions: America is a nation of laws,' he said.
The ministry did not specify if the signal was detected from the downed plane's black box.
The Sriwijaya Air Boeing 737-500 plunged into a steep dive about four minutes after it left Soekarno-Hatta international airport in Jakarta on Saturday afternoon.
'One of the few things he and I have ever agreed on,' Biden said. 'It's a good thing, him not showing up.'
US Open winner Naomi Osaka admitted on Saturday that she was naturally shy and said one of her key goals in the off-season had been to work on her confidence and become more mature.
This year's edition will prove the worth of that policy.
World number one Simona Halep Saturday admitted losing the 2018 Australian Open final was a painful moment, but it taught her how to better handle pressure situations which she has since put to good use.
Ole Gunnar Solskjaer has a golden opportunity to further his credentials for the permanent manager's job at Manchester United when he goes head to head against Tottenham boss Mauricio Pochettino on Sunday.
Speaking at the Hopman Cup in Perth this week, Federer -- who said he had been asked for his opinion on the change by tournament officials -- admitted marathon final sets would be missed by some.
