The pinyin of black dog is hēi gǒu.

Explanation:

1. Black-haired dog. 2. The abhorrent name for the puppet troops during the Anti-Japanese War. 3. Words representing depression.

Churchill once said: "Depression in my heart is like a black dog that bites me every chance it gets." After Churchill, blackdog became the symbol of depression in the English-speaking world. synonym. In modern society, depression has become the invisible killer of this century. I don’t know how many people cry in the dark night and dare not admit that they have depression.

Black dog represents the group of people suffering from depression. The content originally came from Churchill’s famous saying, “Depression in my heart is like a black dog that bites me every chance it gets.”

The term blackdog first originated in the United Kingdom. In today's society, depression has become a major mental illness covering the world.

Depression is a form of manic depression. Typical symptoms include depressed mood, slow thinking, and reduced and slow speech movements. Depression seriously troubles patients' lives and work, placing a heavy burden on families and society. About 15 people with depression die of suicide. A joint study by the World Health Organization, the World Bank and Harvard University shows that depression has become the second largest disease burden in China.

Factors causing depression include: genetic factors, physical factors, functional and metabolic abnormalities of central nervous media, mental factors, etc.