In China, syndromes similar to rheumatoid arthritis were an area of special concern, generating considerable literature on the subject, since the condition could arise suddenly and could rapidly become severely debilitating. Osteoarthritis, on the other hand, tended to be lumped together with other disorders of aging, in which stiffness and pain, especially of the legs, was considered just one part of the gradual deterioration of body functions that occurs with old age. As such, it is usually not the subject of much discussion separate from antiaging therapies. The formulas described in this article mainly fit the category of rheumatoid arthritis treatments.