| As a traditional salt frying apparatus, pan iron was a tool for the ruling class to increase the output of sea salt, crack down on private salt production, and discipline salt people′s behavior. Its restrictive design is embodied not only in the human-machine system at the material level, but also in the human-man system at the institutional and spiritual levels. The former ensures the safe operation of pan iron through its shape, weight, scale, material and use mode, while the latter ensures its smooth operation through the salt law system, respect and worship, and human relations order, so as to jointly promote the performance of pan iron. |