I found that one step can be successful:

1. Select the overall model in rhino v7 and press Ctrl + C

2. Select one face of the model in rhino v7 and press Ctrl + C

3. Back to moi3d and press Ctrl + V,Ctrl + V, the model in rhino v7 will be copied

It's a little cumbersome

Note: the subdivision model in rhino v7 needs to be converted to Nurbs model, which can be copied