The ancient Japanese were absolutely convinced that a miniature dog with silky long hair and an unearthly look of shiny dark eyes was the messenger of the gods, and nothing else.
Therefore, in those distant times, the Japanese chin brightened up the everyday life of exclusively titled persons - emperors, aristocrats and clergymen, and the walls of temples and palaces served as shelter for the elite animals, called the Sacred Lions of the Buddha.
They can be energetic and spontaneous or become almost invisible; can be an example of unbridled fun or just be next to the owner, imperceptibly taking on part of the burden that weighs him down. Innate dignity will never allow chins to attract excessive attention to themselves and, moreover, to show importunity in search of reciprocal feelings.
A source: https://www.zoopicture.ru/yaponskij-xin/
The Japanese chin looks quite similar to a King Charles Cavalier.
yes very similar