The so-called "cold knowledge at the bottom of wardrobe" refers to some knowledge that people are not familiar with or pay attention to, and this knowledge is often mentioned or used in specific occasions. These cold knowledge may be some historical anecdotes, some natural phenomena that people don't often discuss, and even some are related to people's psychological and behavioral characteristics. This kind of knowledge is not often noticed or mentioned by people, but once applied, it can bring unexpected help and enlightenment.

A lot of "cold knowledge in the closet" can actually be regarded as the accumulation of wisdom. Although this knowledge does not seem practical, it often contains people's years of experience and wisdom. Therefore, today's society also advocates and respects this kind of "cold knowledge at the bottom of the box" culture, and thinks that this kind of knowledge can play the greatest role in many cases. For example, in various knowledge contests and games, this kind of cold knowledge can help people win better.

Although people have different degrees of acceptance of "cold knowledge at the bottom of closet", it is certain that this knowledge is undoubtedly very valuable. Many scholars and educators believe that the collection and inheritance of this knowledge will help people to know and understand the world more comprehensively and deeply, thus improving people's comprehensive quality and practical ability. Therefore, in life and work, if we can be good at exploring and using these "cold knowledge at the bottom of the wardrobe", I believe it will bring us more surprises and gains.