When to take what medicine is the theory of traditional Chinese medicine, and it is only a small part of the theory of taking medicine in traditional Chinese medicine.
What Chinese medicine does not cure diseases? Nonsense! The earliest monograph of traditional Chinese medicine, Shen Nong Ben Cao Jing, divides drugs into three categories, the top grade is for nourishing life, and the middle grade is for nourishing nature. These two products can be regarded as health preservation and the lower grade is for treating diseases. Huangdi Neijing, the basis of TCM theory, is about treating diseases and preserving health, among which treating diseases is the main one.
Yin-yang theory is the most important part of TCM theory, but it is only a part, not the whole!
What's the address of that website? Did the person who built it learn Chinese medicine? I want to post it on the school BBS, so that teachers and students can see such a self-righteous website.