This book provides an integrated framework for understanding China's clean transition across rural and urban sectors, with a focus on multi?pollutant mitigation and the spatiotemporal logics that shape environmental governance. It presents a systematic account of how China addresses black carbon, carbon dioxide, sulfur dioxide, and other pollutants through coordinated yet regionally differentiated strategies.The book connects theoretical development, empirical investigation, and policy governance to explain heterogeneous mechanisms and real-world implementation outcomes. It draws on original field surveys, spatial econometric modeling, and sector-specific evidence to examine rural energy transitions alongside urban sectoral change. The analysis traces how aviation, buildings, heating systems, and household energy use evolve under differing institutional and spatial conditions. It demonstrates how sectoral transitions intersect with spatial heterogeneity and institutional design, producing varied environmental and developmental outcomes across regions.The book is written for an international audience of scholars, think tank researchers, and graduate students working in environmental economics, energy policy, rural development, spatial analysis, and sustainable governance. It also serves as a valuable reference for understanding China's distinctive approach to managing complex environmental challenges across diverse geographical and developmental contexts.