The crown prince of the Song Dynasty, Xiao Dingquan, was known for his love of music and poetry.

He wore a unique hat made of black velvet with fringes on the sides.

The hat was adorned with silver buckles and had a small opening at the top to allow him to see clearly while wearing it.

This hat was a symbol of his status as a royal and his passion for the arts.

It was also said that the hat had been passed down through generations of royals in China, making it a valuable piece of cultural history.