When it comes to the "bottleneck", everyone will think whether it is limited by a key factor in the overall work, which has led to stagnation and has been stuck in one place.

But the bottleneck we need to understand today is not the kind of problem encountered in our lives. What we need to understand is the bottleneck of the fire extinguisher. This is an important part of the fire extinguisher. It is the position where the cap of the fire extinguisher is connected.

Do you remember in the first half of this year, Notre Dame de Paris, the sedimentary garden of history and culture, was burned down in the modern fire, how sad it is. If it could be found in time and stop the fire in time, such a tragedy would not happen.

In fact, the birth of fire extinguishers was not accidental. As early as 1834, a fire in London almost completely destroyed the ancient Westminster Palace, where the British Parliament building is located. Among the many fire watchers, there was one who was not doing nothing to see the fire scene. He was George William Manby.

Manby was born in Norfolk. He was a young soldier, officer to captain, and head of the Yarmouth Barracks. This spare time allowed him to devote his time to the cause that strongly attracted him to save human life. Earlier, he was keen on rescue from shipwrecks. He invented the pant-shaped life buoy and was the first person to propose to use a lighthouse to flash the identification signal. Later, Manby turned his genius from marine rescue to fire rescue. At the time of the fire, he was experimenting with fire protection clothing. His most remarkable pioneering contribution was his invention of a portable compressed gas fire extinguisher, a two-foot-long, eight-inch-diameter, four-gallon-liter copper cylinder that is essentially the same as today's fire extinguishers. He put the fire extinguisher in his specially designed trolley, and he hoped that a patrol equipped with the fire extinguisher would immediately extinguish the small fires at the fire site, thereby reducing the number of major fires.

It is his idea that after the fire extinguisher appeared, it has prevented many hidden fires many times.