"Rotating ring" refers to a practical open rotatable ring, which is called rotating ring. The specific manufacturing process also comprises a fixed ring and a moving ring, wherein the outer ring surface of the fixed ring is provided with an annular groove, and the moving ring is accommodated in the groove, and the inner diameter of the moving ring is larger than the inner diameter of the groove and smaller than the outer diameter of the fixed ring. When in use, the ring can be fixedly worn on the finger through the fixing ring.

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In China, rings have been used for at least two thousand years. Rings were often called "rings" in ancient times, and the appearance of the name "rings" was a matter of the Yuan Dynasty. When the ring is spread to the people, its function is not just a simple ornament. As evidence, men and women love each other, give gifts to each other, and swear by each other. It originated from practicality, and then gradually turned to the unity of aesthetics and wealth, and was gradually endowed with different cultural meanings.

Ring refers to the standard of circle size, called hand inch, calculated by numbers. Hand-inch is divided into Hong Kong style and American style, and China mostly adopts Hong Kong style. Most people's hands are between 4 and 26. The safest way to measure them is to ask the clerk in the jewelry store to measure them for you two, or you can measure them yourself and publish them online:

Find a string or a piece of paper, wrap it around the finger where you want to wear the ring, mark the overlapping part of the string or paper with a pen, then measure its length with a ruler and compare it with the hand-inch comparison table.