Decryption process:

The symbol of the outer ring of roulette is regular, that is, y =1; ≤ 10;

Numbers can be expressed accordingly, arranged according to the addition on the left: the first y =1;

The second value is equal to the previous number plus 2 (that is, the formula on the left);

Add 6 to the third value; It's y+2+6+…

Then we can get what is the sign of hollowing out the outer ring;

Step 2, align 5 of the inner ring with y of the outer ring to get the corresponding value.