On the decoration of swords, evil spirits and geomantic omen.

You'd better not let go, there are too many taboos. If it doesn't work, hang more Chinese knots nearby and have red paintings on the opposite side, so as to curb it. Besides, if you are doomed, this knife may ruin your family (it may be a bit heavy, but don't underestimate it). Besides, do you also play Japanese mountain cities? This kind of knife has no evil spirits, even in ancient times! The mountain city is not for decoration, but for killing people!