I believe the ghost.

Hi, this is Xinbo. I believe the ghost. Some years ago, my young bother told me that he saw a man in his room, at that time he only 4 years old. He told us that man is an old man, and his has a long hair, and so on. His grandma told us that man is her husband. But he was dead before my brother born! So, we know my young brother saw a ghost. My girlfriend also told me her saw a young girl and an old woman at the different time. She didn't know who is the girl, but she knew the old woman is her grandma, but at that time, her grandma has already dead more than 2 years. But when they grew up, they never saw them. In China some old people usually say, when a child younger than 5 years old, they can see some different things which adult cannot see.