how to find the child mesh after import a fbx model

In Unity3d,after import a fbx model,for example: a house,i can get child mesh: door,wall,floor etc in child transform.
but in UE4,all i can see is a house without child tell me ,how to find the child mesh?

sorry,the answer hub not works atm, i have to post a thread here

UE4 does not work that way. When you import a mesh, you have two options, first–if you have multiple separate objects in the FBX it can import them to separate static meshes, second–you can combine them all into a single static mesh. It would be nice if they would add prefabs at some point, but it currently doesn’t support it. The closest you can get is with using an Instanced Static Mesh Blueprint.