Set up a stall to tell fortune.

In many people's eyes, fortune telling is just a superstition, even a trick to cheat money, but in fact, fortune telling is not just about reading birthdates's palm, it covers the "fate" and "variables" among various developments in the world.

It is a science to infer the development trend of things from the function of "variables" to "fixed numbers", although it is not completely consistent with the knowledge of daily learning.