Yīnghuāguó de dòngmàn wénhuà yǐngxiǎng le hǎo jǐ dài rén.
Japan's anime culture has influenced several generations.
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Internet slang, common on Chinese social media. Sits alongside 岛国 (dǎoguó, 'island nation') as informal nicknames for Japan. Avoid in formal writing — use 日本 instead.
culture
Cherry blossoms (樱花) are the iconic symbol of Japan, so the country gets the nickname the same way the US is sometimes called 'Uncle Sam' country (山姆大叔国).