What do you mean by passing by?

A glimpse means: to describe something that is short and fleeting, only a flash or shadow can be captured.

A glimpse of the rainbow is an idiom, which is often used to describe the characteristics of short time and fleeting things Floating light refers to the light that flashes before your eyes. It's just a momentary glimpse, and it will soon disappear. A glimpse of the rainbow refers to the shadow that flies by like a leap, slips away quickly and never stays. Therefore, this idiom vividly expresses the meaning that the scene in front of us is fleeting and difficult to capture or grasp.

This idiom is often used to describe the brevity and change of life, emphasizing the passage of time and the fleeting nature of things. It reminds us to cherish the present time and opportunity, and strive to seize those beautiful moments, which causes us to think and cherish life.

In artistic creation, fleeting images are also used to describe instantaneous beautiful pictures. For example, in the performance arts such as poetry, painting and photography, through a glimpse of the frozen moment, rich emotions and artistic conception are presented.

Historical sources of words:

The historical origin of the word "fleeting" has not yet been determined. The usage of this idiom has appeared in ancient literary works, but the specific origin and history are not recorded in detail.

The image description of the word fleeting is related to people's perception and experience of the world. People can see light through their eyes, but light has speed, and what people receive is only the result of the instantaneous stimulation of light on visual perception. And this kind of light often only exists for a moment, and there is no lasting object. Thus, a fleeting glance becomes a visual statement to express this moment.

The formation of idioms often comes from life practice and cultural exchange, which is people's concise understanding of real life and thinking. However, for this idiom, its historical origin lacks specific literature records, so it is impossible to accurately trace its origin and formation.

Although the specific source is unknown, this idiom has been widely used in Chinese, with a unique image and expression. It vividly depicts the fleeting characteristics of things, implying that people should cherish time and grasp the beauty of the present. Regardless of its origin, this idiom plays an important role in China culture.