For standard ovulation induction therapy, FSH/HMG injections typically begin on days 3-5 of the menstrual cycle. The initial dosage is 75 IU per day administered intramuscularly. When the cervical mucus score exceeds 8 points and a single follicle reaches a diameter greater than 18 mm, HMG is discontinued, and an intramuscular injection of HCG 5000-10000 units is administered. Ovulation usually occurs 36-48 hours after the HCG injection, and patients are advised to have intercourse on the second and third days following the HCG injection. If ultrasound shows no response in follicle size after 7 days of FSH/HMG treatment, the dosage is increased to 150 IU per day. If there is still no change after one week, the dosage is further increased to 225 IU per day until follicle maturation is achieved. The required dosage, frequency, and duration of ovulation induction injections vary depending on the individual's follicular development.