Although semen is called semen, in fact, sperm only accounts for a small part, and more than 95% is seminal plasma, including the secretions of epididymis, prostate, seminal vesicle and urethral gland. Seminal plasma is the carrier of sperm, which is rich in fructose, citric acid, acid phosphatase and prostaglandin. Sperm is suspended in syrup and lives there. Once ejected, it rushes out with the seminal plasma. The semen just injected is sticky and will gel when exposed to air. After about 5 minutes, the semen will liquefy due to the unique enzyme system. At this time, if the sperm is in the vagina, it will swim to the eggs hidden in the "deep palace courtyard" in order to combine with them.

With this in mind, let's go back to the question raised at the beginning.