Jiugongge 20-character formula: middle five, shoulder 24, foot 68, nine up and down, seven left and three right. Take 123456789 as an example, and fill in the figures as shown below:

2+9+4= 15

7+5+3= 15

6+ 1+8= 15

Extended data

There are two ways to play "Rearrange Jiugong":

The first is to randomly place eight small wooden blocks from 1 to 8 on a 3×3 grid, and the numbers around each space can be moved into the space. Players should rearrange the small pieces of wood in the order of 12345678, and the one with the least number of pieces will win.

The second game, such as Jiugongge arithmetic game, advances the arrangement of eight numbers in a wooden lattice, with three squares in both directions, so that the sum of three numbers on two diagonal lines of each row and column is equal to 15. While calculating, we should also think about how to push the number box to the corresponding position. This game not only tests people's numerical reasoning ability, but also tests people's thinking logic ability.