how to understand deepmd-kit compute graph

[tonystarkiss]

this is the water example graph, the graph is too complicate to understand, from the input.jason file, I can only see the parameters about the neural network:
"neuron": [25, 50, 100]

"fitting_net" : {
"neuron": [240, 240, 240]

but the network is far more than 3 layers, how to understand the network?