Force Me to Buy a House for My Brother? After the Divorce, the Whole Family Went Crazy

Three years ago, I had just graduated and found a job. My mother asked me to help my younger brother more in the future. But I never thought that this "help" would require me to go bankrupt and spend everything to buy him a house. I have worked for three years without eating or drinking, and I have only earned more than 400,000 yuan. They ask for 500,000 yuan. Do they think my money is all blown by the strong wind? Is it cold-blooded not to give it to me? Moreover, I lost my job at the beginning...