Luo is an architect of single houses, and Luo Shell is his carefully designed single house. The architecture of the snail shell is very sophisticated and is divided into three floors: inner, middle and outer. The middle layer is the thickest, made of calcite; the outer layer is made of a thin, relatively rough colored cuticle, often decorated with patterns; the inner layer is also very thin, made of aragonite, and is "processed" in a special way. Smooth and clean, because this shell is close to the owner's soft, tender body. The thickness and solidity of the shell are "designed" and "constructed" according to the natural environment. In rocky water bottoms, the shells grow very thick to avoid wear and tear; some snails live a floating life, and the shells of these snails grow very thin and light; in muddy water bottoms, the snails are afraid of sinking into the mud and crawling It can't come out, so many thorns grow on the mouth and body of the shell, so it's foolproof.

The snail shell can protect against cold, heat, and enemies. At the same time, it can be carried around. It is really an architectural masterpiece. It is not an exaggeration to call the snail an "architectural wizard".