For example: "A mouse excrement spoils a pot of porridge". On the surface, a pot of clean porridge became inedible because of a mouse excrement. In a deeper direction, it is: because of a small matter, or a small person, the whole thing went up in smoke, or the whole group of people were wronged.
There is also: "there is no dutiful son before the long bed." On the surface, he is a person who has been ill in bed for a long time, and even his own children can't be filial. In a deeper direction, even our own children, if they are incapable, will hate themselves in the long run. For this proverb, we can see that such a situation has already appeared in ancient times. In modern times, this situation seems to be more. Not only in the case of illness, but also in many other aspects.
Moreover, we often say, "It takes two hands to make a sound". On the surface, it takes two hands to make a sound, but a slap can't complete the clap. In a deeper sense, everything has a demand relationship, and you can't accomplish one thing unilaterally.
Therefore, although many proverbs come from rural areas, they are not as beautiful as poems, and their words are not particularly neat, but they are profound.