C292 figurehead
When Xue Ya found out that Jian Wuchen was capable of refining Spirit Gathering Array Plate s, he quickly asked the people below to prepare a hundred sets of materials to refine s.
And the reason why Jian Wuchen could refine puppets, was because he told Lin to show him the internal structure of his body. Jian Wuchen remembered all of them in his head. Just that