The definition of fault-finding: it is a metaphor for deliberately finding fault and finding the wrong one.

The origin of nitpicking: what Han Feizi did: "It is difficult to find fault, but it is difficult to wash dirt."

Important example

1, sometimes it seems nitpicking, but these rules and norms are set for a reason, so we should abide by them.

A woman frequents a small antique shop, but almost never buys anything, but always finds fault with the goods and prices.

In my memory, her mother attached great importance to her image, always dressed brightly, and always cared for her body to the point of being almost critical.

You didn't have an easy date with your lover, but began to nag and criticize, because you were getting impatient with all this.

This phenomenon is attributed to various influences, from the economic situation that allows nitpicking to the plastic surgery industry that encourages superficial concepts of beauty.