Sterling Silver Circular Abacus Fu Pendant

What does this jewelry represent? 

Abacus： The Chinese abacus, also known as a suanpan, is a traditional counting tool that has been used for thousands of years in China and other parts of the world. The abacus consists of a rectangular frame with multiple rods or wires that contain beads that can be moved up and down. Each rod represents a different place value, such as units, tens, hundreds, etc. The abacus was primarily used as a tool for performing arithmetic calculations, especially in trade and commerce. It is still used today in some parts of the world as a teaching aid for children to learn arithmetic, and for those who prefer a more traditional method of calculation.

Material: 999 sterling silver

Weight: 25g

Size: diameter 39mm, thickness 5.5mm

Color: Silver 

Chain: 55 cm