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Question:

Why do you want to design windows and doors? Who wants to come out!

Why do you want to design windows and doors? Who wants to come out!

Answer:

To ventilate. To breathe. To go out. To enter the door.
Think about the first house is the cave. When the human beings have the ability to make their own time to put the cave into a small hole became a door. But the door is not good to put a small light ~! There is a window As for the problem of not walking the window, first of all we are refined the ancients, at least know how to build a house after the already refined consciousness. And, children also have to go it, no way to just how to walk how to live ah.
Idiot question. Why you do not have the clothes to be buttons that can not be so open ah, the door: the first out, the second privacy and security. Windows: the first light and breathable, the second viewing scenery.

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