Is it illegal to open blades in wood blade?

Wood Mountain City is not illegal. As a weapon since ancient times, the mountain city is famous for its beautiful shape, and many famous knives are collected as works of art, which contains the symbolic significance of the samurai soul. Different from other countries' knives, one of the biggest characteristics of Japanese knives is that besides the appearance decoration, the blade itself also shows a sense of art. According to the shape and size, mountain cities can be divided into table knives, broadswords, markers and short knives.