What are the characteristics of Qin-Han science and technology?

The most notable feature of Qin-Han science and technology is the integrity of the scientific establishment and the unity of the technological system. During this period, the framework of the traditional four major disciplinary systems of agriculture, medicine, astronomy and arithmetic had been basically formed, and the major technological systems and styles of smelting, textile, civil engineering and architecture, papermaking, and shipbuilding were also largely established, thus determining the general direction of China's scientific and technological development in the nearly two thousand years since then.