In celebration of the 2025 National Science and Technology Workers Day and International Children’s Day, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College hosted a public science outreach event as part of the National Open Day at the National Key Laboratory of Hematology and Health. Over 200 primary and secondary school students from Tianjin, accompanied by their parents, participated in the event. The Deputy Director of Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Dr. Xiaoli Liu, delivered opening remarks, and the event was chaired by Mr. Chuan Wang, Director of the Education Office.