Over the past decades, subjects concerned with the Chinese character "zhi [Chinese character omitted]", i.e. grammatical structure, in ancient Chinese language, have been widely explored. This paper conducts a research from a new dimension: the Cardiff Grammar, an integral part of Systemic Functional Linguistics (SFL) which is famous for its "problem-oriented theory". In order to shed light on the semantics and syntactic functions of "zhi [Chinese character omitted]" in the Chinese nominal group, this study examines five distinctive nominal groups involving "zhi [Chinese character omitted]" with elaborate tree diagrams which are presented in each of the following sections. Through the contrastive study, we find that the Chinese character "zhi [Chinese character omitted]" has some various functions in different situations: as genitive element (g), as modifier trigger (mtr), as selector (v), as qualifier introducer (qint) and as deictic determiner (dd).