Core Viewpoint - The article discusses the signing of a memorandum by market regulatory departments from Jilin, Beijing, Shanghai, and Zhejiang to enhance collaboration in regulating the online market and promote the healthy development of the platform economy [1] Group 1: Regulatory Collaboration - The memorandum aims to strengthen communication and cooperation among the regulatory bodies [1] - It emphasizes the importance of building a governance system, sharing information resources, and discussing collaborative efforts [1] - The focus is on optimizing the online market ecosystem to support the development of local特色产业 (characteristic industries) [1]