8. (10 points) Max fills 9 different natural numbers into the nine blank spaces in the figure, so that the sum of the 3 numbers in each row, each column, and each diagonal is equal. It is known that the difference between $A$ and $B$ is $14$, and the difference between $B$ and $C$ is also $14$. Therefore, the difference between $D$ and $E$ is . $\qquad$
【Solution】Let $A=28, B=14, C=0$,
$$
\begin{array}{l}
28+14-0=42 \\
28+42-14=56 \\
28+42-0=70 \\
56+42=98 \\
28+14=42 \\
98-42=56 \\
(70-56) \div 2 \\
=14 \div 2 \\
=7 \\
70-7=63
\end{array}
$$

As shown in the figure:
$$
56-7=49
$$

Answer: The difference between $D$ and $E$ is 49.
Therefore, the answer is: 49.