The pearl has an important cultural significance in history. In ancient times, the pearl was often regarded as a national treasure, and was even inlaid on the palace or crown, symbolizing power and wealth. For example, the tomb of the First Emperor of Qin used luminous pearls as burial objects instead of plaster candles. In Chinese history, the pearl was mostly owned by the royal family and was often decorated on jewelry or kept in the bedroom to show its preciousness and mystery.