Prior to western contact which idea from Chinese culture influenced Japón an the koreas

One of the main ideas from Chinese culture that influenced Japan and Korea prior to western contact was Confucianism. Confucianism originated in China and emphasized the importance of filial piety, social order, and morality. This belief system spread to Japan and Korea through cultural exchange and trade, and influenced their political systems, social structure, and ethical values. Confucianism played a significant role in shaping the values and beliefs of both countries before they were exposed to western ideas and influences.