Is it like Sanyinjiao Festival?
Xiang's pinyin is xiàng, which is a three-pinyin section, consisting of initial x, middle I (also a single vowel) and post-nasal vowel ang, with three pinyin components. A trisyllabic section means that there is an intermediary between initials and finals to form a syllable consisting of three phonetic components. Such a syllable is a trisyllabic section.