"Suo" refers to the place, and "Fu" refers to the hiding place. So the phrase "squatting" means hiding somewhere. This phrase is not common in modern Chinese, but it is still used in some literature and history materials.

In ancient times, people often needed to hide some secret documents or valuables, such as gold, silver and jewelry. In order to prevent these things from being stolen, they will choose to hide in a hidden place, which is called "lying down". In addition, in some fairy tales, the word "crouching" will appear to describe some legendary powerful but sealed artifacts.

Although the phrase "fu" has no obvious usage scene in modern Chinese, the word "fu" still appears in some other words, such as "hiding" and "hiding". These words can sometimes be interpreted as the modern version of "squatting" to describe the state of hiding or hiding.