On November 29, 2023, Associate Professor Dr.Ameporn Ratinthorn, Dean of the Faculty of Nursing, Mahidol University, and Associate Professor Weeraya Jungsomjatepaisal, Associate Dean for Administration, attended the Opening Ceremony of Mahajati Preaching. Professor Dr.Suroj Supavekin, M.D., Deputy Dean of Faculty of Medicine Siriraj Hospital, Mahidol University, presided over the ceremony and provided opening remarks. The Mahajati Preaching 2023 was co-organized by Moral and Ethic Division, Faculty of Medicine Siriraj Hospital, Mahidol University, along with Faculty of Nursing, Faculty of Medical Technology, Faculty of Physical Therapy, aiming to dedicate and offer as a royal merit to His Majesty King Bhumibol Adulyadej The Great. The event took place at 100th Year Siriraj Centennial Hall between November 29 – December 1, 2023.