Strong financial resources and harmonious and prosperous families. The lucky stars are shining, and Ding Cai's family is prosperous. How to divide them into two parts?

The first part: the lucky stars shine high, Ding Caiwang is rich.

Bottom line: wealth is wide, family is harmonious and full of happiness.

The traditional writing rule of couplets is to pucker up and fall flat, that is, the last word of couplets is upper couplet and lower couplet.

In the sentence you provided, the word "expensive" is a derogatory term, which is the upper part. "Tang" is a flat-voiced word, which is the bottom line.