Tidal fever: fever like tide has a time, the following three types of clinical common: 1, Yin deficiency tidal fever: mostly late afternoon or into the night fever, characterized by five heart annoying heat, often accompanied by zygomatic red sweating, red tongue with little moss, thin pulse, etc., is a Yin deficiency internal heat. 2, Yang Ming tidal fever: mostly day feed (3 – 5 pm) fever, heat is higher, also known as day Asr tidal fever, mostly due to dry heat in the stomach and intestines, often accompanied by abdominal fullness, hard pain and refusal to press, dry stool, yellow dry tongue coating, etc. 3, wet temperature tidal fever: characterized by heat in the afternoon, the body heat does not rise. Mostly due to dampness, heat, heat is difficult to penetrate, often accompanied by head and body heavy, chest tightness, vomiting, loose stools, greasy moss, etc. Low fever: refers to mild fever (body temperature mostly between 37 – 38 degrees Celsius), but lasts longer, mostly seen in Yin deficiency tidal fever or Qi deficiency fever.