Why do Zhuang people have Chinese knots on their hats?

The Chinese knot on the hat of Zhuang nationality indicates unity. Zhuang is the second largest ethnic group in China and the most populous minority, so there are Chinese knots on the hat. Zhuang embroidery hats mainly feature children's hats. From the functional use, there are two kinds: cold-proof, warm-keeping and beautiful decoration. From the style and meaning, it can be divided into: tiger hat, peacock hat, rabbit hat, flower hat, ganoderma lucidum hat and so on.