What are the characteristics of jade articles in Qin Dynasty?

The decorative patterns of jade articles in Qin dynasty are generally regarded as plane patterns, which are called Qin-style dragon patterns. The slender intaglio lines are closely connected and have no layers. The head, feathers and wings of the dragon can't be distinguished clearly.

In the form of jade in Qin dynasty, the combination of general tombs is mostly simple categories such as Bi, Gui, Jue, Huang and string ornaments. At the same time, Qin Dynasty's preference for dark sapphire should be related to the customs of Qin people who were still black at that time. According to the traditional five elements, the north belongs to water, which represents the color of Xuan, that is, black, and blue-black sapphire represents the color of water, which is also in line with the tradition of Qin people still being black.