Recently, many online hot words have become popular, such as: dopamine wearing, dopamine girl, dopamine literature and so on. So I consulted a friend who studied medicine. The medical explanation of dopamine is this:

Dopamine is a kind of catecholamine neurotransmitter existing in nerve tissues and body fluids, which is the material basis of brain function and has an impact on people's emotions and feelings.

In fact, in my opinion, the common ground is that when we encounter something that makes us happy, our dopamine will rise.