2020, Vol.4 No.4 The cover picture shows an effective inhibitory of triptolide on ovarian cancer. The cell viability, cycle, invasion assay and in vivo experiments have been performed. The survival results show that triptolide can inhibit the proliferation of A2780 and Skov-3 cells by a dose-dependent manner, and it has a small effect on normal cell proliferation within a certain concentration. More details are discussed in the article by Li et al. on page 200017.