When we meet some difficult or difficult people, we all say that they are not "fuel-efficient lights". So what is a fuel-efficient lamp? Our great poet Lu You once mentioned this kind of fuel-saving lamp in his poem. Did this lamp really exist in ancient times?
The lamps in the Six Dynasties usually consist of oil lamps, icicles and trays. Most lamps are beautifully designed and have different styles. Oil-saving lamp is one of these lamps, but it is a kind of porcelain. Its dish wall is a hollow interlayer, and there is a small round opening on the side of the dish wall for injecting water into the interlayer. Put cold water in the interlayer to cool down, which can save half the oil. "The Complete Works of Lu Fangweng" records: "According to the book, candles must be short and thick, no more than one foot. Coarse tolerance, close range. Don't use copper lamps for books, porcelain lamps are the most fuel-efficient. There is a porcelain lamp in Shu that is injected into the lip of the lamp, which can save half of the oil. The lamp method is seven inches high, six inches wide and two and a half inches in diameter. Choose the one with the circle. " It can be seen that the ancients spent a lot of thought to save fuel. In other words, the fuel-saving lamp is equivalent to the current energy-saving lamp.
Oil lamps in the Tang and Song Dynasties were very thin and popular. The ancients once gave provincial oil lamps as gifts to court officials.
Lu You's description of the provincial oil lamp is very true. Not only that, it is precisely because of the celebrity effect of Lu You that the "provincial oil lamp" shines brilliantly all over the country. Thanks to Lu You's praise and publicity, Qiong Yao's production technology of "oil lamp saving" can spread to the whole country, and porcelain kilns all over the world are scrambling to imitate it. Later, the concept of "saving oil lamp" was recognized by the people all over the country, so there were concepts of "saving oil lamp" and "not saving oil".