The night pearl is a rare treasure, which was called "following the pearl", "hanging the pearl", "hanging the ridge" and "bright moon pearl" in ancient times. The night pearl is often regarded as the national treasure of the town. Usually, the luminous pearl refers to fluorescent stone and luminous stone. Ancient books record that the night pearl shines beautifully when it burns. It is formed by the accumulation of some luminous substances in the earth in the ore after millions of years, from the initial magma eruption to the later geological movement. After processing, the stones containing these luminous rare elements are what people call the night pearl, which is often yellow-green, light blue, orange and other colors. If the fluorescent stone is placed under the white fluorescent lamp, it will emit beautiful fluorescence, which is clearly shown in the night pearl in the allusions of past dynasties.

According to historical records, as early as the prehistoric period of the great power of Yan Di, there was a luminous pearl. For example, the king of stone balls in Shennong is known as the "night mine". During the Spring and Autumn Period and the Warring States Period, the "hanging plums" and "hanging spines" are priceless, comparable to jade articles. At that time, only two big officials, Tao Laigong (Fan He) and Jia Dun (a big businessman in the Warring States period), could afford it. The state of Jin used to "hang a thorn wall" as bait and "make a false head and worry about changing". Doctors in Chu, Qin, Wei and other countries all use the night pearl to suggest philosophy and discuss state affairs. Qin Shihuang sacrificed the night pearl, and in the mausoleum "changed the ointment candle". Guo Kuang, the younger brother of Emperor Guangwu of Han Dynasty, "hangs a bead and falls four times, looking like a star by day and the moon by night", showing off his wealth. Wu Zetian gave the jade dragon in the night pearl to Xuanzong, and Xuanzong returned to his son (Sejong) with the pearl darkroom. When Tang had a car, a night pearl named "Shuizhu" sold for hundreds of millions. During the Song, Yuan and Ming Dynasties, the royal family was particularly fond of the Night Pearl. Among them, Genghis Khan's Night Pearl was stolen in Taiwan Province Province and was later solved and returned to its original owner. Yuan Ming sent officials to Sri Lanka to buy rubies and garnet luminous pearls. In the Ming dynasty, there were several emerald luminous pearls in the cupboard, which were as bright as candles.

Some people regard it as a treasure, while others abandon it. In ancient times, some people didn't know about the treasure and abandoned the night-hanging bay in Lebanon. An old farmer of Guo Wei got a pearl with a diameter of one foot. When he saw the darkness, he threw it into a distant field. Some people regard the night pearl as a "disaster" and "hitting the sand". Although some of them are just legends, the night pearl has become a culture of its own in the history of our country by virtue of its beauty, nobility and mystery.