Jian Zhan’s glaze contains chemical components such as silica, alumina, ferric oxide and calcium oxide. Therefore, the high iron content in Jian Zhan can continuously release divalent iron ions during use, and also absorb the chloride ions in water. So they can be easily absorbed by the human body, thereby increasing the function of hemoglobin carrier and red blood cells. Therefore, drinking tea with Jian Zhan can help to prevent anemia, high blood pressure, regulate the central nervous system of the human body to achieve a soothing effect. In addition, it is also effective in balancing endocrine systems, which can adsorb bacteria and reverse the inhibition of the enzyme activity on which the bacteria depend, and achieve sterilization effect.