感谢南北时光大佬的模型，不过原模型的挂钩很容易断，在顶部开了孔，使用羊角钉挂钩可以很好的固定，不容易断，当钥匙扣非常完美。

Thank you for the model from the North and South Time experts. However, the hook of the original model is easy to break and has a hole at the top. The hook can be fixed well with a sheep horn nail and is not easy to break. It is perfect as a keychain.