In that case we use herbs to destroy this bad Qi and Phlegm. In the practice of Chinese Medicine most cancers are caused by unhappiness and bad qi stuck somewhere. Used with Huang Qi. You have King herbs, Minister herbs, Assistants and Messengers. So an herb may have a totally different effect if is used with another herb.
Many people try to steal a doctor s herb formula but the condition changes all the time.
You could need a totally different formula after a few days. You need a doctor to look at the patient, check the pulse, look at the tongue. Chan Acupuncture is more Yang in the sense that it works form the outside in. Herbs are more yin in the sense that they work from the inside out. I like to think of acupuncture as sort of the hyphen between body and mind.