C1343 Who Was the Technology Emperor

You think I don't know anything? Of course, I know this professional term in the field of air conditioning. In the future, air conditioning is a must-have household item. Right now, Han Country has just begun to develop. When it is hot in the summer, sitting under the shade of the tree, he picked up a fan and shook it with all his might. When one's heart was calm, it would naturally be cold