The popularity of candles has gone through a long historical period. According to Xijing Miscellanies, there were candles in the tribute from South Vietnam to Gaudi in the Han Dynasty. It is said that the king will send candles to officials above the marquis and top-grade officials during the Cold Food Festival, indicating that candles were extremely scarce at that time. During the Northern and Southern Dynasties, candles were used a little wider, but they were mainly used for lighting in the upper class, not in the homes of ordinary people. In the Tang dynasty, it was also recorded that there were candles in Jinzhou's tribute, and officials of the Tang dynasty also set up an official to look after the candles in the palace. It was recorded in the Song Dynasty that there was a candle trade in the border trade with Xixia at that time. Candle, as a kind of foreign trade and foreign exchange, shows that although it was widely used at that time, it was still precious. After the Ming and Qing Dynasties, candles gradually entered the homes of ordinary people, and people used them more in their daily lives. But ordinary lamps, such as oil lamps and torches, can't be compared. In the Song Dynasty, lanterns were used by the rich, or candles, but the poor generally used small oil lamps, not the small plates they imagined, and the work of putting an oil core on them was quite meticulous.