Is the iron house in Xiamen hot in summer?

The iron house is very hot, but it is impossible to estimate how hot it is. However, it should be understandable that Leng Xia is hot in winter. After all, iron absorbs heat and dissipates heat easily, so it will be hotter when it is hot and colder when it is cold. Do you remember watching the grocery store while ironing in the ancient TV series? It is not to build a beautiful treasure knife with pig iron, nor to bake it in a furnace at high temperature for several days or dozens of hours, then cool it with cold water, then beat it with a hammer, bake it, cool it, etc. These steps can fully explain the principle that iron is easy to absorb heat and dissipate heat.