This is the 10299th most frequent Polish word.
chińskiego
"Chińskiego" means "Chinese" in a possessive or descriptive sense.
Here, 'chińskiego' is the genitive or accusative case of the noun 'chiński', referring to the Chinese language.
Uczę się chińskiego, bo chcę podróżować po Azji.
I am learning Chinese because I want to travel around Asia.
In this sentence, 'chińskiego' is used as an adjective in its genitive form, describing the origin of the tea set.
Kupiliśmy zestaw herbaty chińskiego pochodzenia.
We bought a tea set of Chinese origin.
Here, 'chińskiego' acts as an adjective in the genitive case to specify the type of movie.