Five. Syllables are the smallest phonetic units of monosyllabic phonemes and consonant phonemes in phonographic languages, and monosyllabic phonemes can also form their own syllables. According to relevant information, I went to the library to look up five syllables. Chinese syllables correspond to Chinese characters one by one, and a Chinese character is also a syllable. A library is an institution that collects, sorts out and collects books and materials for people to read and refer to. As early as 3000 BC, libraries appeared. Library has the functions of preserving human cultural heritage, developing information resources and participating in social education.