夏山 なつやま ふゆ さと方式 ほうしきではありません
natsuyama fuyusato hōshikidewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 夏山冬里方式

1. It is not the summer mountain, winter village way.; It is not the traditional/established way.

Negative
Polite
Formal Register