Chinese President Xi Jinping (3rd R) and his US counterpart Donald Trump (3rd L) hold the second round of talks in the Mar-a-Lago resort in Florida, the United States, April 7, 2017.
Trump upended the meeting by ordering the launch of dozens of cruise missiles at Syrian targets on Thursday, just before Xi's arrival in Florida.
And the Chinese leader has plans to return the American hospitality, according to the official news agency Xinhua, which reported that Xi invited Trump to a state visit in China later this year.
Trump did not explain what differences had been narrowed between the two countries.
As the two leaders wrapped up a Florida summit overshadowed by US missile strikes in Syria overnight, Xi joined Trump in stressing the positive mood of the meetings while papering over deep differences that have caused friction between the world's two biggest economies.
Before his meeting with Chinese President Xi Jinping, Trump talked on the phone with Japanese Prime Minister Shinzo Abe for 35 minutes and discussed Pyongyang's ballistic missile test from its eastern port of Sinpo.
Perhaps mindful of parallels that could be drawn over defiance of worldwide norms, North Korea denounced the USA missile strike on Syria as "intolerable", and reiterated its own right to self-defense.
Trump told Xi that he welcomes any ideas China has on the issue and the US would be happy to work with Beijing.
He said the United States was prepared to take its "own course" if China did not do more to rein in the North.
The spotlight's turn from Syria to North Korea carries benefits as well as risks for the Trump administration, now nearing its 100-day mark.
The North Korean missile crisis was the other issue that drew the attention of the two leaders at the summit meeting.
There were no trade or investment deals announced, no agreement to contain North Korea's nuclear ambitions, no plan stitched together to reduce tensions in the South China Sea.
Xi reciprocated Trump's warm words, saying the summit had "uniquely important significance" and thanking Trump for a warm reception. In the immediate aftermath of the USA airstrike against Syria, which took place during the summit, the two leaders probably had deep disagreements, including over the use of military force against a recalcitrant Pyongyang.
Like most of the world, Pyongyang is still trying to figure out just what kind of a leader Trump will be.
Similarly, though US Secretary of State Rex Tillerson told reporters after the summit that Trump and Xi had held productive and "very comprehensive" discussions on the North Korean issue, the overall prognosis for greater US-China cooperation on the issue remains grim.
As the two presidents went into their final lunch there were no specifics though, and in the aftermath of the US missile strike on Syria, all the big questions which bedevil the US China relationship have been kicked down the road for President Trump's visit to China later this year. There are certain difficulties for the United States to launch a unilateral military preemptive strike on North Korea.
They include placing more missile defenses in the region, having a greater USA military presence on the seas, and sanctioning anyone, including Chinese firms and individuals, that does business or facilitates business with the Kim regime.
Washington denies it has any intention of invading the North. Unlike Syria, North Korea has a means of striking back.
Main points covered at the U.S.
Washington, on its part, continues to escalate sanctions and military threats against North Korea, while stepping up its military investment in Seoul - an approach that further added to Pyongyang's security anxiety.
If it was looking for moral support from Beijing, which is also inclined to support Assad and more diplomacy rather than military actions, it didn't get any.style="text-align: center;"