Hi! I have to simulate a  network but I cannot understand this sub-network:

Conv_1 :                       kernel_size= 3 * 3 * 1   , kernel_number=64
Conv_2…Conv_7:         kernel_size= 3 * 3 * 64 , kernel_number=64
Conv_8 :                      kernel_size= 3 * 3 * 64   , kernel_number=1
what is the In_channels of each layer?
Would you mind helping me figure out this sub network?