阅读理解，选择正确的答案

One day, Ma Liang meets an old woman, She is crying because she can't see anything. Ma Liang takes out his magic brush. He draws two eyes for the old woman. Now she can see everything. She is very happy. Ma Liang draws a well（井） in front of her house. Then he draws some rice for her. The old woman says, "Thank you very much. You are a good boy. "