1Analysis of the Embryo Transfer Outcomes after the Second Biopsy for Preimplantation Genetic TestingXIE Jia-zi, SHEN Jian-dong, WU Wei, DONG Juan, MA Long, CAI Ling-bo, LIU Jia-yin, WANG Dao-wuOriginal Article441-4452Differences in Baseline Characteristics and Pregnancy Outcomes among Infertile Patients with PCOS at Different Degrees of OligomenorrheaLUO Rong, WANG Yu, LIU Yang, GE Hang, WU Xiao-keOriginal Article446-4513Influencing Factors of Psychological Resilience in Infertile Patients with Obese Polycystic Ovary SyndromeLYU Xiang-yang, REN Xiao-shuang, ZHANG Liang, XU Ji-qun, WU Hai-cuiOriginal Article452-455,4674Transvaginal Real-Time Three-Dimensional Hysterosalpingo-Contrast Sonography in Assessing Contralateral Tubal Patency in Patients after Unilateral SalpingectomyWANG Yuan, QIAN Lin-xue, LIN Ying-qi, ZHOU Qin-yingOriginal Article456-4595Case Report of Pregnancy in Two Patients with Diminished Ovarian Reserve Treated with Traditional and Western Medicine, and Literature ReviewZHANG Yu, XIA TianCase Report460-4636A Case Report of Second Cesarean Scar Pregnancy with Intrauterine Device Complicated with Giant Hysteromyoma, Treated by HIFU Combined with CurettageHE Meng, HU Meng-ying, DONG Qu-long, YANG Zhen-hua, ZHANG YanCase Report464-4677Ovarian Venous Angioleiomyosarcoma:A Case Report and Literature ReviewLI Yu-lan, YAO Hui-ping, YANG Pan-pan, XIAO Chen-meng, MA Xue-ying, LIU Xiao, XU Fei-xueCase Report468-4718A Case of Vaginal Foreign Body Retained for Ten Years in An AdultXU Qian, CHENG Jiu-meiCase Report472-4759The Detrimental Effects of COVID-19 on Human ReproductionMAO Xin-yi, XU Yu-wei, LI Wen-jing, MA Zhuo-yao, DING Zhi-deReview476-481,48610Impact of SARS-CoV-2 on ReproductionYE Ling, MA Xue-ying, WANG Xiao-huiReview482-48611Research Progress of Bioinformatics Technology in Reproductive SystemZHOU Li-wei, ZHENG Shu-dong, HUANG Shuo, LU Ting, LIU Yue, DING Zhi-deReview487-49312Research Progress in Metabolomics of Oocyte Microenvironment in Elderly WomenGAN Dong-ying, ZHOU HongReview494-49813Endometrial Immune State of Chronic EndometritisLUO Wan-bin, XIONG Yu-jing, AI Xi-xiong, GU Fang, XU Yan-wenReview499-50314Autophagy in Mechanism of Ovulatory Dysfunction InfertilityZHANG Lei, LIANG Lin-lin, FENG Ke, MENG Li, ZHANG Cui-lianReview504-508,52315Research Progress on the Treatment of Hydrosalpinx Infertility by Renal Activation MethodSHI Ying-tao, WANG ZheReview509-51316Cervical Insufficiency and Cervical CerclageSU Jing, GAO Xiao-li, LI Zeng-yanReview514-51817Advances in Diagnosis and Treatment of Endometrial Cavity Fluid in Patients with Cesarean Scar DefectZENG Zhong-hong, YANG Yi-huaReview519-52318Application Progress of Indocyanine Green Fluorescence Imaging Technique in Radical Resection of Cervical CancerJIANG Si-yue, WANG Wen-hua, ZENG Chao, CHEN Xi, YANG Yong-xiuReview524-528 