Solution: spring and summer × autumn and winter = summer, autumn, spring and summer, spring and summer × autumn and winter = spring, summer, autumn and winter.

∵ autumn and winter < 100, spring and summer × 100 = spring and summer 00 > spring, summer, autumn and winter ∴ winter > summer.

And the land of thousands of miles ≤ spring ∴ spring > summer.

When summer ≠ 1, according to the knowledge of nine tables and winter > summer: winter =5, summer =3.

If spring is ≥6, we can know that autumn is < 7 from spring 3× autumn 5=3 and autumn spring 5 < 4000.

Spring 5× autumn 3 summer =3, then spring =445× autumn 3=43 autumn 5 has no solution.

So summer = 1 because spring and summer × autumn 1= spring 1 autumn and winter, autumn > 5.

Spring 1× autumn and winter = 1 autumn and winter, ∴ spring ≤3 when spring =3, autumn =6, 3 winter× 61= 316 winter has no solution.

Because spring > summer, and < 3, spring =2.

2 winter × autumn 1=2 1 autumn and winter, 2 1× autumn and winter = 1 autumn and winter;

Autumn =9, autumn =8, winter = 7.