But, at a time when Russian Federation is pressured by Western sanctions, and state coffers are strained - to the point where Moscow has been forced to implement hugely unpopular pension reforms to make up budget shortfalls - it was not clear what percentage of those deals were foreign investments.
Japanese Prime Minister Shinzo Abe appeared open to a treaty, saying it was "not normal" that one still hasn't been signed after seven decades.
Relations between China and Japan soured in 2012 over a territorial dispute over several tiny islands in the East China Sea.
Russian President Vladimir Putin proposed Wednesday that Russia and Japan sign a peace treaty by the end of the year without preconditions.
The Japanese leader, who is widely expected to win another three-year term as head of the ruling Liberal Democratic Party in a leadership vote on September 20, noted a resolution would "not be easy" but suggested he and Putin were the ones to achieve it: "Let us walk together mindful of the questions 'If we don't do it now, then when?' And 'if we don't do it, then who will?'"
Noting that this was Xi's seventh visit to Russian Federation as president and first attendance at the EEF, Wang said the trip carried on the tradition that China and Russian Federation support each other in holding major events. "Let's conclude a peace treaty before the end of this year, without any preconditions".
Putin's spokesperson Dmitry Peskov later clarified that the Japanese leader is yet to give an official reply to Putin's idea. Chief Cabinet Secretary Yoshihide Suga called the move "extremely disappointing".More news: Greek cliff collapses on popular beach, injuring seven
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The Russian leader said South Korea is a very important and promising partner for Russia in the Asia-Pacific region, and that he is satisfied by the developments made between the two countries.
"It seems to me that this would facilitate the solution of all problems, which we have not been able to solve over the past 70 years".
More than 6,000 delegates visited the Fourth Eastern Economic Forum with 100 business events, Trutnev told.
The highest profile deal announced at the forum was that signed between China's flagship e-commerce outfit, Alibaba Group, Russian telco MegaFon and Russian Internet company Mail.ru Group, according to a statement released to media.
Establishing its sovereignty over the islands is the crucial issue for Japan, so it would be unlikely to sign a deal without first receiving some assurances from the Kremlin over the fate of the islands.
Nor was it clear how numerous deals signed at the forum were foreign investments, and how many were domestic.
The strategic guidance by and close contact between the heads of state of China and Russian Federation serve as powerful engines for the development of bilateral relations, Wang said.