This is the 8775th most frequent Russian word.
поднебесной
"Under the heavens" or "celestial realm."
In this sentence, the word 'поднебесной' refers to 'the Celestial Empire', which is a poetic and historical designation for China, used to evoke the grandeur and cultural richness of this country.
Культура поднебесной fascinates those who explore it.
The culture of the Celestial Empire fascinates those who explore it.
Here, 'поднебесной' is used in its literal sense, meaning 'the heavens' or 'sky', emphasizing the lofty nature of the mountains.
Горы возвышаются к поднебесной, создавая величественный пейзаж.
The mountains rise toward the heavens, creating a majestic landscape.
In this instance, 'поднебесной' metaphorically refers to the overarching heavens or cosmos, highlighting a philosophical reflection on our existence.