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What does Belgium mean by changing light bulbs?

It is foolish to tease people.

The light bulb in Belgium was broken, so the father asked his son to ride on his shoulder to change the light bulb. The father waited for a long time, but the son didn't change well, so he asked; Not ready yet? The son replied, I caught the light bulb long ago. You didn't turn it. How does this light bulb come out? Mainly teasing Belgian jokes.

Light bulb refers to the lighting source that emits light and heat through electric energy. The invention of Henry Goebbels (Edison) actually found a suitable material, that is, the incandescent lamp with strong practicality was invented, and the light bulb appeared as early as 1854. The most common function of light bulbs is lighting. With the development of society, the use of light bulbs has also undergone different changes. At first, it may be for the convenience of production and life, but with the progress of society, the use of light bulbs has also changed obviously, and functional lights with different uses such as "automobile, beautifying environment and decoration" have begun to appear.