Chinese prepositions, “介词 (jiècí)”, typically precede nouns or pronouns to indicate various relationships such as direction, location, time, and manner. They help in clarifying the relationships between subjects, objects, and other sentence elements, so that guiding the listener or reader through the logic of the statement. Some of the most commonly used prepositions include 在 (zài), 对 (duì), 给 (gěi), 从 (cóng), and 关于 (guānyú). Each of these has unique applications and nuances. These small yet powerful words are fundamental in constructing coherent and nuanced sentences, playing a critical role in the expression of complex ideas and relationships in Chinese.