In terms of building houses in ancient times, under the poor conditions at that time, unlike kitchens and houses, kitchens and houses in the past were mostly connected together, and almost all of them were north-south houses.

The location of the kitchen is either in the north or in the east. This is also to resist the natural wind. As we all know, it is usually windy in the north and northwest in winter, so that the house can keep warm better. Especially in the northeast, the heating of houses is mainly based on burning kang, which is almost a pattern.

If the stove sits west to east, the smoke outlet is in the northwest.

This will be difficult to light. Even if it is lit, the firewood will not be very strong, or even turn off, and the whole kitchen will smell of smoke, because generally speaking, most of the time it is blown by the northwest wind, and the smoke outlet is in the windward direction of the northwest.

On the contrary, if the stove mouth faces west and the smoke outlet is in the southeast direction, it is easy to ignite with the help of wind according to the natural direction, and the fire power is strong when burning, and cooking is easy, and there will be much less smoke in the house. This seems reasonable.