Starting a fire used to be particularly troublesome, every time requiring half a day's struggle with a Fire Bow, although this method was bothersome, it was much simpler than creating fire by drilling wood.
Do you think all ancient people used a Fire Bow?
No, only the poor families used that thing, anyone with a bit of money would buy other tools.
The Yang Sui was a tool that utilized focused sunlight to start a fire, but the ability to start a fire was affected by the weather, thus it wasn't widely adopted.
Therefore, with the advent of flint, things became much more convenient, because flint was made of flints or pebbles, and striking them to produce sparks would ignite the easily flammable tinder, achieving the goal of starting a fire.
Perhaps the most magical was the flint, which leveraged the principle of rekindling in physics to create the device; it was expensive, and ordinary families couldn't afford it.
