It is very hot in summer. Can spraying water on the roof cool the room temperature?

Sticking a reflective film on the window glass can make the whole room cool and comfortable.

It would be better to plant more Parthenocissus plants at the root of the wall, especially the thick old ivy growing on the old house.

Some vines are planted on the roof. Such as vines, cucumber seedlings, beans, bamboo shoots, pumpkins, wax gourd and other seedlings. If the roof is not directly exposed to the sun all summer, the temperature of the roof will be much lower than that of the sun.

Putting a pot of cold water in the bedroom will have a certain cooling effect on the temperature of the bedroom. But the temperature drop is only one or two degrees.

Indoor floor can be properly sprinkled with some cold water. In this way, the evaporation of water vapor can reduce the temperature of the air and gradually alleviate the discomfort caused by high temperature.