The fortune teller said that he would make a lot of money.

The so-called walking to make money means that your fate is "appropriate to move but not to be quiet";

To put it mildly, making money by post horses means that what you want to do is dynamic, such as transportation, sales, journalists and so on. Similar occupations are not fixed in a certain place and need to travel and go out. To put it bluntly, it is not suitable for sitting in an office or something; To put it mildly, it's hard work, running around and getting money.