On September 11, 2019, Professor Didier Blaise, a famous French hematology expert, professor Hu Jiong, deputy director of the hematology department of Ruijin hospital and member of the global committee of EBMT, and other hematology experts held the first China-France PT-Cy program expert seminar in France-China Platform. Experts attending the meeting were: Jiang Jieling, deputy chief physician of the hematology department of Shanghai first people's hospital, li Nainong, deputy chief physician of the hematology department of ujian union hospital, li xiaofan, deputy chief physician of the hematology department of FuJian union hospital, and Wang Sanbin, deputy chief member of the hematology branch of Yunnan medical association. In order to prevent transplant-versus host disease (GVHD), high doses of cyclophospamide (PTCy) have improved outcomes after hemicompatible hematopoietic stem cell (HAPLO) transplantation (SCT). During the meeting, experts and professors expressed their opinions and shared their academic and clinical experience. Professor Braise, professor Hu Jiong and other experts gave full recognition and high praise to the air quality and service of the France-China Platform.