The clear sky of Japan

There is a beautiful sky wherever we are in Japan.
There is a blue sky, and a sky of moonlight night.

I thought this beautiful sky is the common thing in the world.
However, I learnt that it was a mistake.

The international student in China scripted it.
"I am surprised the sky is beautiful wherever I am in Japan."

I felt that we should be very glad there is a beautiful sky in Japan which had accomplished economic development.