Brick won't work, if you're going to build a wall, you have to plaster it on the outside, otherwise after ten or twenty years those bricks will loosen.,But he was also afraid that these people would go to Dongqiao Town in Guifeng and buy there, saying it was two big houses, when in fact they were very close.,He pulled out another thin slate and showed it to everyone: "There are also these kinds. The foreman at the quarry said that these slates can be used for heating floors."。