The word "如下" is a fixed adverbial phrase in written Chinese, formed by combining the character "如" (rú), meaning "like" or "as", with "下" (xià), meaning "below" or "under". It functions as a cohesive device to mean "as follows", directly and logically pointing the reader's attention to the specific information, list, or explanation that is presented immediately afterward in the text. Its formation is based on classical Chinese grammatical structure, where "如" introduces a state or manner, and "下" spatially indicates the text that comes next, together creating a concise and formal link between an introduction and its subsequent details.