The so-called "technique" refers to the way of processing in terms of form and space by a creator and is mainly reflected in a reduced sense of carving and engraving. From the outside to the inside, scrap material is removed step by step. And the shape and structure come into being. The main techniques are listed as follows:

Intaglio

     Also known as diaglyph or line engraving, intaglio is a technique in art in which an image or a character is created by cutting, carving or engraving into a flat surface.

Relief

     Relief, or relievo rilievo, is a sculptural technique which gives the impression that the sculpted material has been raised above the background plane with raised and three-dimensional effects.

Circular engravure

     Also known as three-dimensional carving, it is a fully three-dimensional sculptural technique. The front, rear, left, and right sides should be carved with concrete forms. The common content includes people, animals, and plants, while the main topic is auspiciousness. The works are mainly for appreciation.

Openwork

     Openwork, or hollow carving, is a sculptural technique which removes the parts except the part of patterns. This technique presents the beauty of being dainty and exquisite and the overall form of a decorative structure, suitable for appreciation from both sides.

Inner branch and outer leaf technique

     This technique integrates the essentials and strengths of the above techniques and painting to present art forms in a multi-level and three-dimensional manner. It is the most wonderful and gorgeous technique.