What was the carving process of the Six Dynasties?

In the Six Dynasties, the carving technology developed greatly, with stone carving being the most prominent, steles prevailing, and statues of Buddha grottoes rising, respectively, moving towards specialized art categories such as calligraphy and sculpture, but all of them had inseparable technological beauty. Statues, monuments and stone statues are not only religious, but also of artistic value for display and appreciation.