《史记·七十列传·扁鹊仓公列传》
脉虽长而直硬却均匀和谐，是肝的经脉有病，出现了时疏时密躁动有力的代脉，就是肝的络脉有病。 
和即经主病也，代则络脉有过 。
Pulse is long, straight, stiff but harmonious indicates liver meridians disease, if the pulse is brisk and strong at irregular intervals, it indicates liver luomai disease.