A good husband and a good wife means a man and a woman who are morally corrupt. In fact, "a good husband and a good wife" is a misunderstanding of the idiom "adulterer and adulterer". The pictures on the internet are "adulterers and adulterers", not "good husbands and good wives" at all.
In calligraphy works, the words "rape" and "obscenity" are often mistaken for "good fortune", so the word "adulterer and adulterer" is often regarded as "good fortune" in calligraphy works. The correct pronunciation should be "adulterer and adulterer". Adulterers and adulterers refer to men with unhealthy morals and bohemian women.
The word adulterer and adulterer comes from the 27th chapter of Water Margin by Ming Shi Naian: "An adulterer and adulterer, though a felony, is dead. The rest committed crimes and released Ning Jia. "