Why can't modern technology compare with the hairspring carving technology of jade articles in Han Dynasty?

The "hairspring carving" in ancient jade processing technology is such a magical and mysterious traditional jade processing technology. This magical jade treatment technology can not only greatly enhance the artistic appeal of jade, but also make the viewer feel moved and incredible under the careful observation and taste of the viewer. What is even more amazing is that in today's highly developed science and technology, although we have already understood the technological characteristics of the ancient jade "hairspring carving",

But it still can't explain how the ancients only relied on rough and crude jade tools to process and cut such slender, dense and messy beautiful lines. As a result, the dispute about the treatment technology of this ancient jade is still inconclusive today. It is no exaggeration to say that the "hairspring carving" process can not be copied at all without relying on modern precision power tools and only using ancient manual cutting, and it has long been lost.

The hairspring carving technology can be traced back to the Neolithic Age in primitive society. The hairspring carving can be clearly seen in the jade cong unearthed from the Liangzhu cultural site in the Neolithic Age 5,000 years ago. But it is puzzling that what tools were used by the ancient people in the Stone Age in primitive society to cut such fine lines, which were even, coherent and smooth than hair.

It is not easy to carve with modern precision power tools, let alone in the Stone Age when metal tools did not appear. To say the least, even if we found the right tools, how did the ancients achieve such accuracy? These dense lines, almost imperceptible to the naked eye today, can actually ensure that they are not chaotic, coherent and smooth. In the face of these artistic treasures of 5,000 years ago, we are dumbfounded today, and our admiration is like a raging river.