Russia's coal industry, reeling from a drop in domestic demand, hopes to increase exports to China, the world's largest consumer and producer of the fuel.
Russia and China do not compete in Central Asia but respect each other's interests there, a senior Russian diplomat said on Monday.
China and Russia's energy giants signed a framework agreement on the Russian gas supply to China.
The China-Russia joint drill, code-named Peace Mission-2013, enters the phase of battle planning Saturday as China's last troops arrived at the designated area.
Chinese and Russian naval forces participating in the "Joint Sea-2013" drills wrapped up three days of maneuvers here Wednesday.
Russia's new ambassador to China, Andrei Denisov, has promised to improve Beijing-Moscow relations based on mutual political trust.
Chinese President Xi Jinping's visit to Moscow confirmed continuity of the strategic partnership between Russia and China. Entrepreneur likes prospects for traveling around Russia
Northeast China's Heilongjiang province is planning to increase investment in Russia by $1 billion by the year 2015, and $2 billion by 2020.
It was always easy to observe Sergei Razov's affection for China and his efforts to boost Sino-Russian ties over the past seven and half years when he served as Russian ambassador.
Northeast China's Heilongjiang province, which accounts for nearly one-fourth of Sino-Russian trade volume, has been redoubling its efforts to further boost trade and economic activities with Russia's Far East region, the top provincial leader said.
China and Russia signed a joint statement to strengthen their key partnership on Friday after President Xi Jinping arrived in Moscow to start his first visit abroad since taking office last week.
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Newly elected President Xi Jinping spoke with his Russian counterpart Vladimir Putin by phone on Thursday, with both sides pledging to strengthen ties.