Subsequently, the center of geometry is subtracted from the coordinates R of the graph G. The graph embedding 𝐺 /9+ = {𝐴 /9+ ⊕ 𝐶 /9+ , 𝐸 /9+ , 𝑅 /9+ } is used as the input of time step 𝑡 and combined with the embedding of 𝐺 52 to be fed into the trainable module. Two locked copies of prior model are created, one is used in the 3D generation module and the other one is employed in the constraint module.