Is phrase-ultimate—There's a separate question asking with regard to the variation in between /aɪ/ and /iː/ Within this context: Pronunciation of phrases ending with “‑ae”. 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 You have to distinguish English vowels from English orthography. You can find involving twelve and fifteen distinctive vowels in English, based upon https://66649270.blogrelation.com/42994611/about-ae-sexy