What does dzi Zhu think of the year?

The dating of dzi beads is the same as all cultural relics. The simplest and most scientific method is to scrape the artificial adhesion residue and make a comprehensive analysis of carbon 14.

Secondly, according to the popular age and area of decorative patterns, combined with the special age of materials, we can infer the year by judging the patina of leather shell, polishing and drilling technology, etching technology and the comparison of unearthed objects. In short, the aesthetics of science and technology in each dynasty in history are different. When you fully understand and gain a deep visual and tactile memory, you can quickly distinguish your age.

All other illusory stories say, when you are old, please listen as a joke.