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.'
Trump will also address troops at a US base in Japan, highlighting the military alliance between the two allies at a time when tensions are running higher with North Korea after the failure of the Hanoi summit in February.
"I feel bad for Theresa. I like her very much. She is a good woman," Trump said.
More than 400 million people are eligible to elect 751 members of the European Parliament with the first official results to be announced late Sunday once voting in all EU countries is over.
Trump has waged a major campaign to roll back Iran's influence in the Middle East and also on Friday announced he was deploying 1,500 additional US troops to the region.
Mutharika, 78, campaigned for a second five-year term on his record of improving Malawi's scant road and power infrastructure.
