This book is one of the series of “World Heritage in China”. This series aims to categorize and study China’s world heritage and its outstanding universal value, so that readers can understand the status and value of China’s world heritage from a global perspective. It is a series of world heritage books combining scientific research and popularization. This book delves deep into China’s World Heritage-listed urban sites: Pingyao, Lijiang, Macao, and Kulangsu (Gulangyu). These sites, as living cultural heritage, are vividly elaborated and analyzed in terms of their historical development and changes, urban spatial layouts, architectural groups, residential environment, cultural characteristics, and preservation practices. It offers readers an in-depth understanding of the value and significance of the historic cities as world cultural heritage.