Its action tends to dissipate stagnation; this herb dissipates stagnation and expels blood stasis, allowing new blood to generate naturally, thereby harmonizing the body. When charred black, it can stop bleeding and treat metrorrhagia (abnormal uterine bleeding) and lower gastrointestinal bleeding. It is indispensable in all formulas involving Qi and Blood; it guides blood-invigorating herbs into the Qi level to generate Blood, which also illustrates the principle of "Yang generating Yin." The *Bencao* states: What is meant by "benefiting Qi" is precisely referring to its role in relation to Blood.