The “Mostly OM” International Conference aims at providing a top academic exchange platform in the field of operation management initiated by Tsinghua SEM. Supported by various parties, “Mostly OM” has become an influential brand of academic conference popular among scholars from home and abroad. For instance, Professor Assaf Zeevi, associate dean of Columbia Business School, Henry Kravis chair professor, Professor Chung Piaw Teo, director of Decision-making Science Department in National University of Singapore Business School and several other renowned scholars were repeated attendees and speech presenters of the conference. This high-level conference greatly helps Chinese scholars in this field broaden horizons and grasp the latest research results in operation management as well as further improves the status and research level of Tsinghua SEM in the field of operations management.