No. Ye Haiyang and Brother Chicken are not the same person, they are two different roles. Ye Haiyang is a fictional character. He is a young scientist who is doing a research called "Space Exploration". Brother Ji is a cartoon character. He is a lovely chicken, which often appears in cartoons and games. They are very different in appearance, but they all have some common characteristics. For example, they are all yellow and like to eat chicken and eggs.