If I guess correctly, this figure should be an overlapping figure of "Tian" and "Mi", and China's mathematics will become a "nine-square grid". The specific solution is as follows: Let the middle number be A, and the sum of the three numbers on each straight line be B, and then consider that the sum of the four straight lines on the word "meter" should be 4b. Then according to the meaning of the question, the following formula is obtained: (21+22+23+24+-29+3a) = 4b because a can only be a number between 2 1-29, 4b can be an integer between 288-3 12, and can be rounded to 4. 3127 simplifies the formula just now and gets: a=(4b-225)÷3, so it needs to meet the requirement that 4b can be divisible by 3 after subtracting 225, so 4b can only choose 300, so the middle number A is equal to 25. Determine the number of each row and the middle number of b=75, and determine the sum of each row. The answer is 28 2 1 26 23 25 27 24 29 22-Thank you o(∩_∩)o ... I hope to bring you good comments ~★ x 5!