mortise

And there are any metallic connectives on this bed, joggle is between bed leg and bedplate, craftsman certains ably good mortise, this bed combination is together.

并且这个床上没有任何金属连接物，床腿和床板之间都是榫接的，工匠巧妙地凿好榫眼，将这个床组合在一起。