An English idiom in this article is alliterative: nothing happened. The word voice is used as an adjective here and can be interpreted as "sound", "intact" and "stable". For example, correct judgment is "correct judgment" and physical and mental health is "physical and mental health". The meanings of Safe and sound actually overlap, but people don't mind repeating their meanings for rhyme.
This idiom is suitable for many occasions, for example, when the police returned the child to her intact, she was overjoyed (the police returned the child to her unscathed, which made her extremely happy).
It can be inferred from the above information that peace only appears for rhyme, and there should be no allusions.