8. In the three phrases “尽心尽力” (exert oneself to the utmost), “力可拔山” (strength to move mountains), and “山穷水尽” (at the end of one's resources), each Chinese character represents a number between 1 and 8, with the same character representing the same number and different characters representing different numbers. If the sum of the numbers represented by the characters in each phrase is 19, and “尽” > “山” > “力”, then the maximum value of “水” is $\qquad$
【Key Points】Number Puzzles, Maximum Values
【Difficulty】Given
【Answer】 7

【Analysis】From the problem, we have:
$$
\left\{\begin{array}{ll}
\text { Jin+Xin+Jin+Li }=19 & \text { (1) } \\
\text { Li+Ke+Ba+Shan }=19 & \text { (2) } \\
\text { Shan+Qiong+Shui+Jin }=19 & \text { (3) }
\end{array} \quad \text { we get } 3 \text { Jin+Xin+2Li+Ke+Ba }+2 Shan+\text { Qiong+Shui }=19 \times 3=57\right.
$$

The sum of 1 to 8 is 36, so we have 2 Jin +1 Li +1 Shan = 57 - 36 = 21. Comparing with (1), we get Shan - Xin = 2.
"Jin" > "Shan" > "Li", "Li" should be as large as possible, so "Jin" is minimized. Assuming "Li", "Shan", and "Jin" are consecutive natural numbers, we have 2(Li + 2) + Li + 1 + Li = 21, so "Li" is 4, "Shan" is 5, "Xin" is 3, and "Jin" is 6.
(1) is satisfied: 6 + 3 + 6 + 4 = 19;
(3) is: 5 + Qiong + Shui + 6 = 19, so Shui is maximized at 7, and Qiong is 1. We then verify (2):
(2) is: 4 + Ke + Ba + 5 = 19, and now only 2 and 8 are left, which satisfy the conditions. Therefore, Shui is maximized at 7.

If "Jin" > "Shan" > "Li" is not satisfied, it does not meet the requirements.
Thus, the maximum value of Shui is 7.