Bian Shi is a therapeutic tool that appeared in the Stone Age. The tools used by humans in the Stone Age were mainly made of rocks. After a long process of practice, people have found that some special stones can be used after a little processing, which can alleviate diseases or pains. This stone that can relieve diseases is bian stone.
It is no accident that bian Shi can cure diseases. The research shows that it is obviously different from other stones in composition and physical properties.
The above reference source: Bian Shi-Baidu Encyclopedia