The global situation is undergoing profound and complicated changes with increasing instability and uncertainties, Xi said. "We found them", he said.
Recall that in 1956 between the USSR and Japan signed a Declaration on ending the war, the document also meant the conclusion of a peace Treaty in the short term.
On a related note this was not the first time when Putin and Xi were occupied in "pancake diplomacy", as earlier in June, Putin prepared a Chinese pancake, which Xi later tasted ahead of visit to China.
During a speech at the Easterm Economic Forum in Vladivostok, Russia, Chinese President Xi Jinping said Beijing's relationship with Russia is at an "all time high" as he called for further investments in Russia.
The two countries vie for political influence over the ex-Soviet states of Central Asia.
The issue has been at the fore during talks between Japanese and Russian officials throughout the summer.
Xi told Abe that Sino-Japanese ties "face an important opportunity for improvement".
Starting in April 2018, the US imposed tariffs on steel and aluminum imports from China, as well as Canada and countries in the European Union.
For his part, Abe said that the two countries "have a duty to future generations".
One issue facing both sides is the islands known as the Northern Territories.
For his part, Abe appreciated Xi for his sympathy for Japan's losses caused by the natural disasters.
Putin said the conclusion of such a deal would create a better atmosphere and allow Russian Federation and Japan to "continue to solve all outstanding issues like friends".
Noting that Russian Federation and China have a tradition of hosting children from each other for recuperation, Putin said he hopes the young generations of the two countries will carry forward the profound traditional friendship between the two peoples.
The Trump administration said the tariffs were necessary to protect national security and the intellectual property of USA businesses, and to help reduce the US trade deficit with China.
"But we are ready to look for resolutions that would work for both Russian Federation and Japan, and which would be accepted by the people in both countries", he said, adding that he was sure relations would have "new impetus" following the talks.