This study investigates the semantic structures of degree adverb constructions (DAC) in Mandarin through a network-based approach. We first utilized covarying collexeme analysis to determine significant collexeme pairs strongly associated with the DAC. We then incorporated network-based quantitative methods to analyze the emerging schemas from these collexeme pairs. Our approach involved implementing network analyses at two levels. The collexeme-based network consisted of lexical nodes representing degree adverbs and modified heads, while the construction-based network featured collexeme pairs as nodes. The collexeme-based network reveals that degree adverbs develop distinct semantic preferences for attributes within specific semantic fields, primarily capturing subjective and evaluative aspects of human experience. The construction-based network highlights dynamic interactions among these significant collexeme pairs, showcasing semantically interconnected collexeme pairs forming cohesive constructional families. Furthermore, these semantic groupings underscore the crucial role of metaphorical extension in creating larger semantic clusters for higher-level linguistic generalization. The emergence of semantic coherences from both networks reflects the evolving nature of linguistic generalizations, transitioning from low-level pivot schemas in the collexeme-based network to higher-order generalizations in the construction-based network. This study contributes to the field of usage-based grammar by emphasizing the fundamental role of sequentiality and interconnectedness between linguistic units in linguistic generalization.