Russian team members carry a box containing the remains of four Soviet Union soldiers down the Huoshao Mountain in Muling city, Northeast China's Heilongjiang province, May 12, 2015. A one-month-long China-Russia search began Tuesday to locate the remains of Soviet Union soldiers who died in China fighting Japanese invaders in 1945. A 17-member Russian team, along with a group of Chinese archaeologists, are involved in the dig. [Photo/Xinhua]