Analgesic effects of essential oils purified fromCinnamomum longepaniculatum Thermodynamic outlook and practice of Chinese medicinal nature Investigation of differences between Cold and Hot nature of Mahuang decoction and Maxing Shigan decoction based on cold/hot plate differentiating assay Analgesic effects of Xiatianwu Capsule and Oral Liquid in comparison with its Tablet Anti-inflammatory and analgesic effects of Polygonum orientale extract