Chang Qing, male, born in December 1969, Professor and master's supervisor in Histology and Embryology. He is Responsible for teaching courses in histology and embryology, developmental biology, morphological techniques and methods, and cell culture etc. He is Engaging in basic research on fertility maintenance, based on animal models such as testicular chemotherapy injury and polycystic ovary syndrome, to study the protective effects and related mechanisms of sex related hormones on reproductive organs. He has Finished one Ningxia Natural Science Foundation project and two National Natural Science Foundation projects, published over 20 articles, participated in the writing of 2 monographs and 3 textbooks.