The "four" on the glyph: children and grandchildren are full and people are prosperous.

The Chinese character "four" is a small "child" surrounded by railings, protected like a baby, flat and steady, which means that the square house is full of children and grandchildren and the population is prosperous. The first requirement for building a house is "stability", so "four" has been an auspicious number for a house since ancient times.

The Arabic numeral "4" is like a flag. It is the flagpole of all numbers. 0 like eggs, 1 like pencils, 2 like ducklings, 3 like ears, 4 like flags, 5 like hooks, 6 like bean sprouts, 7 like sickles, 8 like handcuffs and 9 like tadpoles.

Extended data:

" 1 "。 In the traditional culture of China, 1, 2, 3, 4 and 5 correspond to life, old age, illness, death and suffering (6 is born again, and so on). The size of the door made by the carpenter and the number of beams written by the painter in the hall must abide by this rule.

"2"。 "2" stands for perfection, representing the balance of yin and yang, and both of them are happy.

"3"。 In ancient times, there were "three old friends" and "soldiers of the three armed forces". Today, it is a homonym of "life" and "business". Quite popular with many people.

"4"。 "4", like "2", stands for perfection, represents the balance of yin and yang, and is endowed with different talents. A year is divided into four seasons. Unfortunately, some people say that it should not be homophonic with "death".