Qi plays a very important role in human daily life. Like cooking, use gas stoves; Bath hot water, gas water heater; Even cars can use natural gas as fuel; In addition, the beautiful tiles used to build houses are all burned with gas.
In addition to the above purposes, in more advanced European and American countries and Japan, gas is also used in gas stoves, gas rice cookers, gas refrigerators, gas air conditioners and so on.