This first volume explores asymmetry in language by examining how affirmative and negative constructions reveal markedness phenomena. Building on the focus of the larger set, this volume first introduces the theoretical framework and key concepts of markedness theory and then applies them to affirmation-negation dynamics. It discusses unmarked versus marked negation, polarity words, and the gradual weakening of affirmative-negative contrasts, showing how these patterns reflect deeper connections between language, cognition, and semantics. This volume will benefit linguists, language educators, and researchers interested in language structure and function, particularly in Chinese linguistics, markedness theory, and cross-linguistic inquiry.