Old Yan helped answer: "His family first lived in three rooms.",“Why aren’t you expensive A hundred catties for just three coins, and once winter arrives, they will sell for five coins.” The old man sighed: “Don’t think my bricks are expensive either; my family only earns a hard-earned living.”,"Then I'll order 20,000 blue bricks and 20,000 red bricks. Uncle, give me a discount."。