The next sentence is to be simple and true. There are two kinds of extreme vulgarity. The extremely evil vulgarity is the vulgarity full of secular atmosphere. It pursues status and vanity, fills the body with glittering jewelry, and lets the smell of money occupy the soul. This is bad custom.
Da vulgarity means elegance
There is another kind of extremely good vulgarity in the world, which does not deliberately pursue the so-called elegance, nor does it deliberately avoid being regarded as secular, but just lets nature take its course. The heart is in harmony with the sky, the behavior is spontaneous but not arrogant, the mind is natural and unmanned, the behavior of such a person is very ordinary, so ordinary that it seems vulgar.
But it is very special because of its natural harmony, so that the taste of elegance is called vulgarity, simplicity and truth means the simplest and most sincere, vulgarity refers to what many people pursue. For things, elegance refers to elegant and tasteful things. The forms of these two things may be different, but their essences are likely to be the same. They may be interchangeable or even the same in form.