Why is it hot in summer? Besides fans and air conditioners, is there any other way to cool the room?

Scientifically speaking, because the rotation axis of the earth is not perpendicular to the revolution plane of the earth, the position of the direct point of the sun is constantly changing. When the point is directly in the northern hemisphere, the northern hemisphere gets more energy, which is summer and the southern hemisphere is winter. or vice versa, Dallas to the auditorium

Using aerodynamics and building structure can effectively cool down, but the effect is not very good.