compact, exquisite workmanship, rugged.
The locks are not only human life supplies, and culture (folklore) material, it represents the culture of a nation and in different historical periods. My locks have been stretching for thousands of years, the private ownership of it and human almost simultaneously born. Initially, the human simply personal valuables wrapped in animal skins up the outside with a rope firmly tied, and marked with a special knot opened at. Such a tightly tied knot of death, can only be called "wrong" with a tool to pick open. Wrong, also known as "Shaw", "", "screwdriver". It is made of ivory or animal bones, shaped like a sickle-shaped hooks, in fact, knot is the first lock, "is the first key to this is the prototype of China's locks.