There are numerous differences or great diversity.
形容各类多，差别大。
宋·释道原《景德传灯录》卷二十五僧问‘如何是无异底事？’师曰‘千差万别。’”
The cultures of the world are thousands of differences.
Learn the next connected idiom: 千差万别 (qiān chā wàn bié) → 别开生面 (bié kāi shēng miàn)
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