Space engineers say there are no bars to Mars

Scientists are working to overcome obstacles ahead of the planned launch of a probe to Mars next year. Yu Fei reports for Xinhua.

Sun Zezhou, chief designer of China's Chang'e 4 lunar probe, spoke quickly but clearly.

"Every time I see the moon, I think about how Chinese probes have left permanent footprints on it, especially Chang'e 4, the first spacecraft to soft-land on the far side. As a member of that mission, I'm very proud," he said, his eyes shining brightly.