Herbs that Tonify Yang

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Which herb tonifies Kidney yang to treat impotence and infertility, and also dispels wind-cold-dampness to treat bi syndrome?
Yin Yang Huo is horny goat weed, so it's good for sexual problems. It also displels wind-cold-damp to treat bi syndrome and unblock the channels in post-stroke conditions.

Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. pp. 779. [Q1122]