Xiaomi Mi Mix is not a single word but a brand name followed by a product line. As a proper noun, you pronounce it as two parts: the Chinese company name Xiaomi (pronounced approximately shao-mee) and the product line Mi Mix (pronounced mee mix). In standard usage, stress falls on the first syllable of Xiaomi and on Mi, giving: /ˈʃaʊ.mi ˈmiː mɪks/ in broad terms, depending on the speaker’s accent. It is typically treated as a proper noun in English discourse and used as the device’s model name in marketing and reviews.
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