Before talking about this topic, I will tell you a thing that happened on me recently. Because of a little business, I got a 100 Yuan cash last week. I put it on the table and told my daughter could keep it as pocket money, but it still lays on the table today. She told me that it's enough having phone to buy anything. Maybe that special paper worth nothing in her mind. In my mind, it's worth enough food for supporting my family over two days. A payment app gives us an illusion that money is just a number since it connected our credit cards. We usually spend more money than we made monthly. It seems that the amount of money on our phone is huge. At first, we were afraid that we couldn't repay our credit cards next month. Later, the apps tood us that we could just repay a little part of the debt, the rest could be repayed later with just a little extra interest. We were excited and thankful for the boss of the apps. Nowdays, we can loan on the apps. How much you can loan depends on how fast you repay you debt. We feel that we have enough money to do everything, but we also feel weird! Am I really a rich person?