(A) the advantages of tatami:

1, tatami is economical. It has many functions, such as bed, carpet, chair or sofa. According to estimates, the cost of "tatami" for rooms of the same size is only three to a quarter of that of western-style layout.

2. Use space effectively. In the case of a small room, there is no furniture such as beds, tables and chairs, which can save a lot of space. This is in line with the fact that there are more people and less land in Japan.

3. Sitting on a soft sofa for a long time will relax the muscles of legs, hips and waist, and the muscles sitting on tatami will be in a state of tension, and there will be no fear of muscle relaxation.

(2) Shortcomings of tatami:

1, tatami is hard, suitable for people with lumbar problems and long bodies. If you don't need to sleep on a hard bed, you will feel uncomfortable.

2, it needs to be cleaned frequently, and dust is easy to hide in the gap. Frequent cleaning is easy to produce bacteria, which is not conducive to people with sensitive skin;

3, long-term wind and sun are easy to fade, and the service life is short.

Second, the fire resistance

(1) Advantages of Kang:

1, which not only solves the problem of sitting and lying, but also can dissipate heat through so many kang surfaces and keep the indoor high temperature.

2. Because the kang is burned through a wok, as long as you eat and boil water, the kang is hot. In winter, in order to keep out the cold, some people build a flue under the indoor ground, which is called "fire ground" or "underground kang". In the particularly cold season, increase the fire to raise the room temperature. Although it is freezing outside and dripping into ice, the indoor kang surface radiates heat with the ground and is still warm as spring.

(2) Disadvantages of fire resistance:

1, need to prepare firewood and other fuels.

2. If you don't build a flue, it will cause smoke in the house.

Extended data:

The principle of heatable kang is that the hot airflow generated by burning fuel such as straw and branches will dissipate heat to adobe when passing through the flue of heatable kang. Adobe is a poor conductor of heat, so the temperature of heatable adobe will last for a long time.

Modern tatami adopts advanced Japanese technology and equipment, and selects high-quality straw as raw material. After high-temperature fumigation and disinfection, it is pressed into semi-finished products, sewn by hand, covered with natural mats, and wrapped with decorative ribbons on both sides to make the finished products. A good quality tatami weighs about 30 kilograms. The tatami just made is grass green. If used for a long time, it will be oxidized by sunlight and become bamboo yellow.

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