1. Design: According to Cui Chengxuan's requirements and design concept, the jewelry designer drew the design of the rectangular big ring.

2. Material selection: Jewelry designers choose suitable materials according to the design drawings, such as gold, platinum and diamonds.

3. Cutting: The jewelry designer uses a cutting machine to cut the selected materials into rectangles.

4. Polishing: Jewelry designers use a grinder to polish the cutting materials to make their surfaces smooth.

5. Mosaic: Jewelry designers embed diamonds and other precious stones in rectangular materials.

6. Completion: The jewelry designer makes a final inspection and modification of the rectangular ring to ensure its quality and beauty.