First of all, I would like to thank the general public for their trust in me. Seeing that some netizens are troubled by diseases and confused by false advertisements, as a doctor, I deeply sympathize with them, and I am also more confident in relieving the confusion for patients. The promotion of scientific knowledge can effectively make people popularize some medical knowledge, identify right and wrong, and get the right treatment. Because we are all working doctors, our workload is usually very heavy, but we also have to take care of the online Q&A, so sometimes we can not answer the online users’ inquiries in time, please forgive me. For example, when answering a patient with poor erectile function and a wife who is not yet pregnant, I need to know the following questions: I wonder how your erection is when you masturbate? The pain of urination you say is the pain inside the urethra when urinating or the pain in the penis when sexually excited? Is the Viagra you take orally sildenafil and do you know how to take it? Is it soft after a minute or so after insertion after ejaculation or without ejaculation? How is the relationship between husband and wife in the past one year of marriage, is there any separation, how many times a week is the sex life on average? Is there any history of unclean sex or UTI, any abnormal discharge from the urethra? Has there been any semen test? What is the result? Is there a high level of excitement during sex? What is the relationship between husband and wife, is there any stress or anxiety or tension during sex? How is the usual penile response to sexual stimulation? How is the usual sexual desire? How is the morning erection in the last three months? Do you like to drink alcohol or smoke? Is there a lot of stress at work?