1. The primary function of a wallet is to hold money. Whether it's large bills up to one hundred yuan or small change as small as dimes, it's much better to keep them sorted and categorized than to mess them up together. This makes both storage and use more convenient. I think this is self-evident.

2. In the information age, various cards have emerged, and transportation cards, meal cards, bank cards, and attendance cards are essential. Some people also carry other various cards, which are better kept in their wallets (at least they are less likely to be broken or demagnetized).

3. Put some important things that can be taken out at any time for spiritual enjoyment, such as the beautiful image of your lover, and the charming photos of your little emperor or princess .....

4. A wallet is an external manifestation of one's personality and a reflection of one's identity. If one flips open their wallet and finds it filled with messy bills and clutter, it at least reflects that person's lack of attention to detail. Moreover, nowadays, a thousand-yuan bill in a wallet is not considered the most luxurious, so some people treat it as a display of their status and are very particular about it.