Why is there a bamboo dragonfly on the helmet of takeaway brother?

The life of the takeaway brother is boring, so they will make some decorations on the helmet, such as Meituan's. If they do well, these people may bring a pair of rabbits. As for the helmet of the takeaway brother who put the bamboo dragonfly, it is just to look good, to add a little attraction, to attract others' attention and to add a little color to his life.