2, followed by drilling wood for fire. It's not Du Zao, it's true. Use hard objects, including iron, hard sticks, etc. Drilling on wood for 10 minutes or more can raise the temperature and finally burn.
3. Later, it was found that the impact of bronze, iron and some hard objects can also produce sparks, and how these Mars caught fire when they met something with low flammability. As a result, flint was found, which became the main method for people to make a fire for quite some time. As early as the Neolithic Age, this method of making fire was used by people until liberation. It can be said that in ancient China, flint, passbook and sickle were mixed together.
4. Finally, the competition. In the Northern and Southern Dynasties, the ancient Chinese invented primitive matches, which glued sulfur to small sticks. With the help of kindling or flint, a stroke could easily trigger a yin fire to turn into a yang fire, but it was not popularized. Until the Ming and Qing dynasties, it was still dominated by fire passbook. 1826, Englishman Walker invented modern matches, 1830 invented yellow phosphorus matches, 1835 invented red phosphorus matches, 1848 invented safe and harmless matches, and Germans invented today's safe matches.