Beijing reviewing its energy needs with slowing economy, says report.
Pictures of the paws, stashed in the tyres of their vehicle, have gone around the world.
A seven-year-old tiger gave birth to a female cub on 25 July 2011, which was the first successful breeding of a Siberian tiger in the wild in China.
Presidents Vladimir Putin and Xi Jinping oversee agreement of an historic pact ahead of G20 meeting in St Petersburg.
A vision of deepening ties between Russia and China outlined by Ambassador to Beijing Sergei Razov.
More than 300 enterprises now have investment from China in this Far East region.
New rail bridge linking the two countries symbolizes closest-ever economic co-operation between neighbors.
New four times a week link between Beijing and Vladivostok.
The new 6.5 kilometre rail link will open in 2017 across the world's 10th longest river.