A rich man went to a Wall Street bank to borrow a loan of 5,000 yuan. The loan period was two weeks. The bank loan must be mortgaged. He used the Rolls-Royce parked at the door as collateral. The bank clerk parked his Rolls-Royce in the underground garage and lent the rich man 5,000 yuan. Two weeks later, the rich man came to pay back the money, and the interest totaled 15 yuan. The bank employee found that the rich man had tens of millions of dollars in his account, and asked why he still wanted to borrow money. The rich man said: You will never find a parking lot on Wall Street for $15 for two weeks.
Enlightenment: Obtaining as much benefit as possible with as little money as possible is the true meaning of investment.