Taweesak Chotivatanapong, M.D., a cardiothoracic surgeon of Vejthani Hospital has shared his knowledge about the tactic of heart valve repair surgery to the medical staff at Buddhachinnaraj Hospital which is a hospital in Phitsanulok province of Thailand on 22 – 24 July 2020 under the project “Train the Trainer”. There were doctors and medical staff from Buddhachinnaraj Hospital, King Naresuan Camp Hospital, and Sawanpracharak Hospital who joined this event.