On the morning of February 6th, the 4th hematopoietic stem cell donation in our city was successful. Lin Yixin, the volunteer of the hematopoietic stem cell in our city, has carried out the collection at the Department of Hematology, the Second Xiangya Hospital of Central South University for more than 3 hours, with 200ml collection quantity. At present, the collection work has been successfully completed. The volunteer's hematopoietic stem cells will be donated to a 10-year-old girl in Beijing, rekindling hope for her life.