Jade Cong is the most representative artifact and sacred symbol of Liangzhu Culture. From some jade materials to finished products, it went through several processes such as shaping, sampling, drilling, sectioning, and polishing. The most powerful of these processes is ornamentation carving. Liangzhu ancestors used the small flint to create fascinating beast faces on the jade. There are 3 to 5 lines 1 mm at some places of the ornamentation. It's even thinner than the hair so it could be seen as a micro-carving work today.