This door is also a symbol of hope. It makes us believe that no matter how harsh the external environment is, as long as we have firm faith and determination, we can find the courage and strength to withstand the cold.

Let us cherish this warmth and be grateful for this line of defense. In the days ahead, may we all have more shelters like this, allowing our inner warmth to continue. On cold winter days, the heating boiler becomes our most intimate guardian. Meticulously maintained at a constant temperature of 55 degrees Celsius, it acts like a warm giant, silently guarding the warmth of our home. The floorboards are subtly warm, and every step we take feels like stepping into the warm air of spring.

The room's temperature is perfectly maintained at 15 degrees Celsius, a perfect temperature that feels neither too cold nor too hot, just the right amount of comfort. It's as if the temperature is carefully controlled by a magician, and one can't help but marvel at this pleasant temperature.

This warmth is more than just physical warmth; it's a solace to the soul. It dispels the winter chill and brings the warmth and tranquility of home. Every time I return home, it's like a warm embrace, making me forget the harsh cold outside.

The source of this warmth is the constant-temperature boiler. It silently works, asking nothing in return, simply to bring peace of mind and comfort to the family. Its presence is the guardian of the home, the warm sun in winter.

Let us be grateful for this warmth and cherish this protection. In the cold winter, may every home have this constant temperature protection, allowing warmth and love to fill every corner. The large hollow cave in the central activity room of the bathroom cleverly connects all rooms.