The neighbors China and Russia –one of the world’s biggest oil producers, next door to the biggest oil user after the US–, are deepening its relation. China National Petroleum Corp. (CNPC) will start laying a second domestic oil pipeline in June to allow Russian crude supplies to flow to China’s northeastern city of Daqing, Bloomberg reported.

The project between the Chinese border city of Mohe and Daqing runs parallel to an existing spur off of Russia’s East Siberia-Pacific Ocean crude pipeline and the 942 kilometer line is expected to be completed by October 2017, CNPC said in an statement.

Russia started sending crude supplies to China from the spur off the Eastern Siberia–Pacific Ocean (ESPO) pipeline in 2011, Radio Free Europe wrote. In addition, the two neighbors are also considering building a second natural-gas pipeline to transport as much as 30bcm of natural gas annually from West Siberia to China over 30 years.