Thanks,joe.
The moment I solved it, I saw you reply.
Yet another question occured, this question I think maybe appropriate to post here, when character made in makehuman(which saved as .fbx file) imported into Blender, the Y coordinates for the body in .fbx seems to be negative Z coordinates in Blender, while the Z coordinates seems to be Y coordinates in Blender.
This demonstrates makehuman's coordinates system is different from that in Blender, however I need to assure the coordinates system to be same since some transfromations will be applied.
I tried to change the import settings of blender, but it didn't work.
Sorry not to import characters using the MFPB2 since animation should be added through mixamo, so characters in makehuman needs to be save as .fbx file.
Could you give any clue about this?