I think it's important to first clarify the definition of infertility, which is defined as couples living together for over two years with regular sexual activity, not using contraception, and not conceiving. Those who have never conceived without contraception after marriage are defined as primary infertility, while those who have been pregnant before and then, without using contraception, have not conceived again for two years are defined as secondary infertility. According to the World Health Organization's manual on standard examinations and diagnoses for infertile couples, the clinical standard for infertility is defined as one year. However, currently, we think that individuals who have had regular sexual activity without contraception and have not conceived for over a year should be advised to visit a specialized hospital and consult the gynecology or traditional Chinese medicine departments to investigate the causes of infertility.