The "seven joys" in China's traditional customs refer to seven happy events in life, including the following seven:

1. The second time.

2. Dead wood meets spring.

3. Four generations under one roof.

4. The long drought brought rain.

5. Meet an old friend in another country.

6. Wedding night.

7. the first time.

In the traditional culture of China, 7-up happiness is regarded as a symbol of auspiciousness, happiness, reunion and happiness, and it is a kind of sustenance and wish for people's life.