In order to further improve the business level of the hematology industry and promote the comprehensive, coordinated, and sustainable development of the hematology profession, after research, it is proposed to hold multiple sessions of the "Hematology Branch Series Seminar" online from July to October 2024. This conference is hosted by Chengdu High tech Medical Association and organized by the Hematology Branch of Chengdu High tech Medical Association. Renowned experts in the field of hematology in the province are invited to give special academic presentations and discuss and exchange relevant classic cases and cutting-edge technologies. The fourth session of the Hematology Branch's seminar on the application of second-generation sequencing in hematological tumors was successfully held online on August 5th.