Some people who are particular about things even use blue bricks for their kang beds. It's unnecessary, red bricks work just fine. The old man thinks they are even warmer than blue bricks.,The old man said, "It depends on how many houses you want to build. Six houses would cost about 40,000, three houses around 20,000. How many houses are you planning to build","This brick-making stove isn't used by me, it's for ordinary people to cook with. It uses less smoke and doesn't irritate the nose."。