This is the 4441st most frequent German word.
japanischen
The German word "japanischen" means "Japanese" (adjective, relating to Japan).
Here, "japanischen" is used as an attributive adjective modifying the noun "Vase", describing its origin.
Ich besitze eine japanischen Vase.
I own a Japanese vase.
In this example, "japanischen" modifies "Brücke" in the genitive case, indicating possession or association.
Das Design der japanischen Brücke beeindruckte alle.
The design of the Japanese bridge impressed everyone.
Here, "japanischen" modifies "Gäste" in the nominative case, providing an attribute to the subject.