"Alone" means "loneliness" and "lonely house" means an empty house. The meaning of "stupid" is easy to understand, that is, dull and stupid. In fact, the reason why the son in the "lonely room" becomes "stupid" is that he often stays in a fixed environment and does not contact with outsiders, which easily makes people dull and stupid.
Stupidity here does not mean the defect of IQ, but the personality will become timid and introverted, ignorant.
This situation was very common in the past. In order to maintain family life, parents will choose to leave the countryside to work in big cities. Children can only stay in the countryside and be taken care of by their elders.
These children stay in the countryside all the year round and have no entertainment except school. Only the old people, teachers, classmates and buildings in the village are visible to the naked eye. So in their subconscious, the world is like this, and all people and things are what they see.
Coupled with the cultural differences between elders, there are not many topics that can be exchanged between children and elders, and there are few peers of the same age. In this way, children will gradually become introverted, do not like to talk, creativity and language talent will not be well stimulated, and they will not really understand where the gap between themselves and others is, and some will even be flexible and ask questions.
Therefore, the ancients said that "the son who lives in the isolation room is stupid", which means that those children who live in the isolation room can't contact with the outside world because of the limitations of environmental and economic conditions, thus becoming closed and dull.
Extended data:
"Downtown" refers to those crowded and densely populated places. These places are also called mixed places. A "prodigy" refers to a person who can tell lies and do things flexibly.
In fact, it is easy to understand the sentence "Downtown is a genius". After a long time in this mixed place, you will naturally come into contact with all kinds of people. What kind of people you meet and what you should say are all necessary common sense, from which you can learn a lot about being a man.
Especially living in such a social background, we are dealing with different people every day. From your words and actions, you can see its way of dealing with people. Therefore, there is an urgent connection between the two. How to talk about dialogue and do good deeds is a profound knowledge and the key to success.
"The son who lives alone is stupid, and the downtown area is brilliant" is actually telling us that we should dare to take the first step, take our children out for a walk, see the outside world, feel different scenery and different human feelings, and tell him that life is much richer than what we see.