The square braised pot is not powered by steam, but by natural gas.

According to Zhihu data, a square stewing pot requires about 12M3 of natural gas per hour. In comparison, it is not as energy-saving as electromagnetic and thermal oil. However, the reason why natural gas is still used is because natural gas is easy to inflate and is widely available on the market. It is common on the Internet and can make users more convenient to use in life.

The main component of natural gas is methane, which is a colorless, odorless, non-toxic and non-corrosive flammable gas. However, when the concentration of natural gas in the air reaches 5%-15%, it will explode when exposed to an open flame. It is also used in cooking, domestic fuel, power generation, chemical raw materials and other fields.