What lighting methods were there in ancient times?

Ancient lighting began with fire. A large number of ashes were found in the ape-man cave in Beijing. 500,000 years ago, there was no light, so it could only be illuminated by fire. At that time, fire was not only used for lighting, but also for baking food and heating. With the progress of human beings and the development of social production, "torch", "meteor" and "candle" have appeared. Han dynasty called it "stirrup", and later it was simply called "lamp".

Lighting by fire has lasted for thousands of years in China, in which vegetable oil has always played a leading role. Shen Kuo mentioned oil, but failed to become the mainstream fuel.

Fire is an ordinary fire. It always looks the same.