What is the difference between modern lamps and ancient lamps?

One wick goes up and the other goes down. Haven't you heard the joke about the tortoise sealing the official position?

Forget it, I'll sue you.

In ancient times, there were oil lamps, animal fat lamps, candle lamps, wind lamps and even bronze lamps. There are kerosene lamps and portable lamps in modern times.

Nowadays, there are almost no non-light bulbs except Kongming Lantern.