Their decline and demise own to their unfit to social development, also it is the unavoidable result of unifying wars among princedoms. 其衰亡既有自身不适应社会发展需要的原因,也有诸侯国统一战争的必然。
The Economic Development of the Princedoms and a Research on the Reasons in the Early Western Han 汉初封国经济发展及其原因探析
Designers explore in this princedoms constantly. They have tried to show the three-dimensional space in the two-dimensional plane,, but also strive to reflect two-dimensional plane effect in the three-dimensional space. 设计师们在这条道路上不断地探索,他们既试图在二维平面上表现三维空间,又力求在三维空间中体现二维平面概念。