If you don’t have much money, just keep it simple and buy cheap bricks. Some are more than ten yuan per square meter, but at most they are less than thirty yuan. Pave the floor, buy ordinary wall paint, and rinse the walls. If you can do it yourself, rinse it yourself. It is best to buy all the supplies in the kitchen and bathroom at special prices. Don’t add any styling to the house, just keep the doors and windows simple. Anyway, if you want to save money, you can't be too demanding. As long as things are economical, affordable and durable, don't be too demanding about the ball being beautiful. Building a home is really not easy, just take your time and it will be fine in the future.