Core Insights - The publication of the academic work "History of Qing Dynasty Opera" marks a comprehensive overview of the development of Qing Dynasty opera, spanning nearly 300 years from the early to late Qing period, highlighting its significance as the third peak of Chinese opera art [1][2] Group 1: Structure and Content of the Book - The book is structured into two volumes and 21 chapters, detailing various dimensions such as creation, performance, vocal styles, and theories [1] - The first volume consists of 9 chapters that establish the peak status of Qing Dynasty opera in Chinese art history, focusing on the development from the early to mid-Qing period, including the works of Li Yu and the Suzhou writers [1] - The second volume contains 12 chapters that examine the rise of local operas in the mid to late Qing period, the decline of Kunqu, and the evolution of vocal styles, particularly focusing on Bangzi and Pihuang [1] Group 2: Contributions to Opera Research - The book is considered a significant contribution to the study of Qing Dynasty opera culture, filling gaps in research, especially regarding the development of the Bangzi and Pihuang vocal styles [2] - It provides innovative research on the formation and evolution of a grand vocal system, contributing to a deeper understanding of the cultural ecology of Qing Dynasty opera [2]