四、鲁班锁

Luban Puzzle

鲁班锁是一种古老的益智玩具，传说是由中国古代工匠鲁班发明的。鲁班锁，亦称孔明锁、难人木等，它起源于中国古代建筑中的榫卯结构，拼装时需要仔细观察，认真思考、分析，有利于开发智力，让手指变得灵活。鲁班锁具有结构巧妙、扣合严密、易拆难装的特点。随着鲁班锁的流传，民间又逐渐在六根锁的基础上派生出不同数量、不同形式的鲁班锁。可以说，鲁班锁是榫卯技术发展到一定程度的表现。

Luban puzzle is an ancient puzzle. It is said that it was invented by Luban, an ancient Chinese craftsman. Luban puzzle, also known as Kongming lock, hard wood and so on, originated from the mortise and tenon structure in ancient Chinese architecture. In assembling, it requires careful observation, thinking and analysis, which can help to develop intelligence and make the fingers more flexible. Luban puzzle has the characteristics of ingenious structure, tight closure, being easy to dismantle and difficult to assemble. With the spread of Luban puzzle, different numbers and forms of Luban puzzles were gradually derived by the folks based on the six-stick form. It can be said that Luban puzzle is a manifestation of the development of mortise and tenon technology to a certain level.