Herbs that Release the Exterior

For a patient with Taiyang Deficiency Syndrome -- fever and chills WITH sweating, body ache, and a floating moderate pulse -- which herb is your first choice?

Gui Zhi is the representative herb for Taiyang Deficiency, presenting with fever and chills and the presence of sweating. Because the exterior is deficient, sweat leaks out, but does so in a way that is insufficient to expel the pathogen.

Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. pp. 8 [Q523]