Chang'e-5 is one of the most complicated and challenging missions in China's aerospace history.

嫦娥五号是中国航天史上最复杂、最具挑战性的任务之一。

But its objective was twofold, one part discovery, the other to advance China's ambitions in space exploration, one of the most complicated and challenging missions in the country's aerospace history.

但它的目标实际有两个，一个是发现探索，另一个是增强中国在太空探索方面的雄心壮志，这是中国航天史上最复杂和最具挑战性的任务之一。