Language. Writing. Philology Collection is a collection of research monographs by Professor Nguyen Quang Hong covering linguistics, graphology, and philology. Among them, the book Vietnamese Syllables and Poetic Language is a monograph by Professor Nguyen Quang Hong and Doctor of Literature Phan Diem Phuong. The content of the monographs in the collection is quite diverse, exploring many different research spheres, and can be divided into two main categories. The first category is Linguistics and Vietnamese language studies, and the second is Philology and Sino-Nom research.