This is the 7982nd most frequent Chinese word.
黑龍江
Heilongjiang: A province in northeastern China, named after the Heilong (Black Dragon) River.
Here, 黑龍江 refers to the proper noun of a province, used as the subject in the sentence.
黑龍江是中國東北的一個重要省份。
Heilongjiang is an important province in northeastern China.
In this sentence, 黑龍江 is used to indicate the location of Heilongjiang, specifically referring to its winter season.
黑龍江的冬天非常寒冷。
The winter in Heilongjiang is very cold.
黑龍江 is used as the destination for the intended travel, showcasing its function as a geographical place name.