Mandarin Chinese TTS audio on tts.audio runs on three MAI Voice 2 voices: Bo (male), Lan (female), and Mei (female). All three produce Standard Mandarin in Simplified Chinese, the variety used in mainland China, Singapore, and the Chinese diaspora, and the official language of the People's Republic of China (普通话). Bo supports all eighteen MAI expressive styles. Mei supports the same full set. Lan supports a reduced ten-style set covering the most common emotional colors. Mandarin is a tonal language with four tones (plus the neutral tone) that change word meaning. The MAI voices reproduce tones correctly based on the written Chinese characters and the context. Use cases for Mandarin TTS include e-learning localization for the mainland China market, accessibility audio for Chinese-language documentation, audiobook drafts, and pronunciation reference for English-speaking learners of Mandarin. For Cantonese, Traditional Chinese (Hong Kong, Taiwan), or other varieties, MAI does not ship dedicated voices; switch to the Gemini multilingual model. PDF upload handles Simplified Chinese characters natively.