The word "大赛" is formed through a direct conceptual combination of its two constituent characters: "大" (dà), meaning "big" or "major", and "赛" (sài), meaning "competition" or "contest". It is created by placing the descriptive character for scale or importance directly before the core character representing the event, resulting in a composite idea that intuitively means a "large-scale competition" or "major tournament", where the first element modifies and amplifies the second to form a single, unified concept.