This was the first time Ning Cheng saw the Blood River Otter, but he had heard many ghost stories about water monkeys when he was very young. Water monkey is a name in the countryside. Some people also call it water cat. I heard that this kind of thing specializes in killing people in the water. Ning Cheng went to study it specifically after studying. He believed that this kind of water monkey was an otter, but it was just mystified....