Finger-pulling is a hand protection tool, which is worn on the hook finger to buckle the bowstring. At the same time, when releasing the arrow, it can also prevent the bowstring pulled back quickly from scratching your fingers. The ancients also called "machine", which is similar to "trigger", indicating that finger pulling is equivalent to trigger.

Dysprosium was first seen in the Shang Dynasty (from17th century BC to1th century BC), and it was very common to use banzhi during the Spring and Autumn Period and the Warring States Period (from 8th century BC to 3rd century BC).

For thousands of years, there have been various styles of finger-pulling. The most important ones are sloping fingers and barrel fingers. Slope-shaped fingering appeared earlier, with chord grooves at the earliest, and was later cancelled. In China, the sloping finger pull was used until the Ming Dynasty. Abroad, Turkic-Turkey and South Korea are still in use. In the meantime, there are all kinds of finger wrenches. In Mongolia and Qing Dynasty, barrel fingers were mainly used. Traditional Han Banzhi is slightly different from Mongolian Banzhi: Han Banzhi is trapezoidal in side view, that is, one side is high and the other is low, while Mongolian and Manchu Banzhi are generally cylindrical.

According to textual research, the barrel-shaped finger wrench was mainly unearthed after14th century.

/kloc-After the 0/7th century, the Han people developed finger pulling into jewelry.