Six, eight is enough.

Up nine and down one,

Left seven right three.

This is the answer that every three numbers in the horizontal, vertical and oblique nine squares add up to a sum.

It is also the usage of putting all numbers (like 5, 6, 7, 8, 9, 10,1,12, 13) in nine squares.

For example:

55, 56, 57, 58, 59, 60, 6 1, 62, 63 In the nine squares, the sum of every three numbers is a sum?

You can number lines 55 to 63 (for example, 55 is numbered 1, 56 is numbered 2, and 57 is numbered 3).

Then you use that mouth to decide

Two, four are shoulders,

Six, eight is enough.

Up nine and down one,

Left seven right three.

That is, 55 is equal to 1 and 56 is equal to 2.

It became

56 63 58

6 1 59 57

60 55 62

You can check it if you don't believe me.

56+63+58= 177

6 1+59+57= 177

60+55+62= 177

Tilt over

56+59+62= 177

58+59+60= 177

If you say it's just a coincidence, you can make up a question yourself!

My math teacher taught me!