《黄帝内经·灵枢·九针十二原》
鍉针，针尖像黍粟之粒圆而微尖，适于按压经脉，以导引正气，从而排除邪气。
鍉针者，锋如黍粟之锐，主按脉，勿陷以致其气。
Tui needle, the needle tip is like a millet grain, round and slightly pointed, suitable for pressing the meridians, to guide the righteous qi and thus eliminate the evil qi.