What's the difference between ephedra and ephedra root?

Ephedra: sweating to dispel cold, dispersing lung and relieving asthma, promoting diuresis and reducing swelling. Mahuanggen: Treating spontaneous sweating due to yang deficiency and night sweats due to yin deficiency. Both of them are sweating blindly. Stop sweating blindly. The former is usually combined with cassia twig to dispel cold, and the latter is usually supplemented with calcined longan/floating wheat to stop sweating, nourish yin and suppress yang. Don't confuse!