花好月圆
Meaning
A perfect, harmonious moment — traditionally used for weddings and Mid-Autumn greetings.
In a sentence
Wishing the couple 花好月圆.
Usage note
Strongly associated with romance and family reunion.
Where you see it in Brain Challenge
This idiom appears in the picture-idiom levels as a picture or number clue. When the clue shows numbers, the digits usually become the first characters of each half of the idiom — that is why so many chengyu start with 一, 三, 五, 七, 九 or 十.