Taoism says that men lose Yuanyang. What does this mean? I know what Yuanyang means, and I just want to know how to define this "loss". )

Yuanyang is kidney yang, also known as true yang, true fire, fire of life gate and congenital fire. It is the motive force of physiological function and the source of human life activity. Compared with kidney yin, it embodies the functional activities of kidney yin and has a warming and promoting effect on the physiological activities of various organs of human body.

Losing Yuanyang means kidney deficiency, which means that kidney function is weakened and needs to be treated according to different symptoms. Deficiency of both yin and yang of kidney, insufficiency of kidney qi, symptoms such as spermatorrhea, premature ejaculation, endless dripping after urination, frequent and clear urination, soreness of waist and knees, hearing loss, shortness of breath, tepid limbs, weak pulse, etc., the treatment is mainly to tonify kidney.