The person who folded the quilt said, "Folding the quilt is to prevent yourself from sleeping in the cage, and folding the quilt is to find the mobile phone hidden in the quilt."

People who don't fold quilts say, "We don't fold quilts to save time, and we don't fold quilts to conform to the entropy increasing principle of thermodynamics."

Among the current reasons, two are more reliable:

1, space reason

In the past, the space at home was relatively small, and the bed had many functions besides sleeping.

By folding the quilt, you can save space for eating, sitting and other functions.

2. Cotton theory

In the past, the main material of quilts was cotton. If the quilt is not folded, it is likely that the cotton will be unevenly distributed and the quilt will lose its effect.