This simulated image shows orbital maneuver and orbital correction of the orbiter-returner combination of China's Chang'e-5 lunar probe. (CNSA/Handout via Xinhua)

BEIJING, Dec. 13  -- The orbiter-returner combination of China's Chang'e-5 lunar probe on Sunday completed the second orbital maneuver and entered the moon-Earth transfer orbit, sources with the China National Space Administration said.