Let's start with the gas stove.
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The advantage is that it is light, and it can be easily carried with a mountaineering bag on the mountain and at sea. Parts such as stove, gas tank and windshield can be disassembled. If you simply cook noodles, a can of gas can be used several times, and two or three people eat a small hot pot, probably two or three times.
Barrel furnace
Later, because there were more camping by car, I changed to a more convenient cassette stove.
In fact, it is also a gas tank, a cauldron that can be put on the stove. It is more convenient to use more people.