<p>Shui Zhi is clearly used for blood patterns. There are three methods to diagnose a blood pattern. Firstly, when there is a hard fullness in the lower abdomen with uninhibited urination there is a blood pattern. When there is inhibited urination, it is not a blood pattern. Secondly, when there is no abdominal fullness, yet the patient feels there is abdominal fullness, there is a blood pattern. Lastly, when there is a tendency for forgetfulness, hard black stools without difficulty, there is a blood pattern. These three methods are used by Zhong Zhongjing to diagnose a blood pattern.</p>
