It was set up comprehensively as far as Song Dynasty.Dongjing is the most emblematical deputation.

可以说，经过隋唐五代的逐步开放，直到北宋时期，才在城市中有了广泛的设置，当时的都城东京是最为典型的代表。

After the analysis and calculation to an emblematical hypothesis, we made further improvement to the model.The result validated the rationality of the model.

通过典型想定的示例计算分析，对模型进行了进一步的改进与探讨，所得结果充分验证了模型的合理性。