"Oh, oh," the doctor glanced at him and lowered his head uncomfortably, his voice as light as a mosquito's whisper, "Fifth Master... You have a concealed injury, which I've discussed with your family physician. I won't dwell on this point, but you and your wife want children, and currently, the biggest problem is... is..."
The doctor hemmed and hawed for a long time, steeled his heart, bit his teeth, and mustered the courage to finally say, "Your sperm vitality is somewhat low, which makes it very difficult for your wife to conceive. Even if she does conceive, there is a high risk of miscarriage or fetal arrest..."
The more the doctor spoke, the quieter he became, until at last, his voice was barely audible.
Although he, as a doctor, didn't think low sperm vitality was anything to be ashamed of, his opinion didn't represent the view of the vast majority.
The vast majority think it's very embarrassing for a man to have low sperm vitality.