Although the night is beautiful, what does the metaphor of cold weather mean?

Although the night is beautiful and cool weather is used to describe beautiful things or scenes, it is accompanied by some unsatisfactory situations or problems. "The night is beautiful, but the weather is very cold" is a metaphor. The original intention of this metaphor is that although the night is beautiful, the weather is very cold, suggesting that beautiful things or scenes also have their shortcomings and need our attention. This metaphor can also be applied to all aspects of life, such as: although the working environment is good, the work pressure is great; Although someone is smart, but lacks practical experience, etc., we need to recognize the existing problems and deficiencies while appreciating the beautiful things, and take corresponding measures to solve them.