The deals were signed during Russian Prime Minister Dmitry Medvedev's visit here.
Energy giants China's Sinopec and Russia's Rosneft signed an MOU on oil and gas projects in eastern Siberia while China National Petroleum Corporation and Russia's Gazprom inked an agreement on the design and construction of the cross-border section of China-Russia east-route natural gas pipeline.
China Development Bank and Russia's state corporation Vnesheconombank (VEB) also signed an agreement on a 10 billion yuan (USD 1.56 billion) loan, state-run Xinhua news agency reported.
With the sluggish global economic recovery, lower commodity prices and downward pressure for economies, China and Russia have faced common challenges for growth, Li said.
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"But China and Russia have faced downward pressure on the economy head on," he said, citing increased Chinese commodity imports from Russia and rising bilateral cooperation in energy, equipment, high technology and e-commerce.
Both premiers called on the two countries to find new growth engines.
Li also proposed carrying out cooperation in oil exploration, development and refineries, and aligning China's development strategies of innovation, mass entrepreneurship and "Made in China 2025" plan with Russia's development strategy by 2020.
China is willing to work with Russia to join China's Silk Road Economic Belt initiative with the Russian development strategy as well as the Russia-initiated Eurasian Economic Union, Li said.
Russia hopes to work with China to outline future cooperation and explore new ways and areas for cooperation, he said, suggesting both sides further increase practical cooperation in trade and investment, mining resources, oil and gas, nuclear, aerospace, agriculture, finance and military technology.