What does a fan-shaped Chinese knot mean?

Happiness comes with a fan, which means good luck.

Chinese knot is a unique hand-woven handicraft in China, and its emotion and wisdom are only one aspect of ancient civilization in China. It was first knotted by sewing clothes in the Paleolithic Age, and then extended to the ritual records of the Han Dynasty, and then evolved into today's decorative techniques. Chinese knots include: double money knot, ox knot, pipa knot, group gold knot, cross knot, auspicious knot, swastika knot, coiled knot, algae well knot, double connection, trick knot and so on.