TJ, a four-generation dog, embodies an obsessive behavior. The term "执念" (zhí nán) in Chinese describes this unwavering focus on a single object or task, often to the point of obsession. TJ's story serves as an example of how such dedication can lead to remarkable achievements. Despite being raised in a world vastly different from ours, where dogs do not typically exhibit complex cognitive abilities, TJ demonstrates an extraordinary level of intelligence and determination. Through rigorous training and unwavering commitment, TJ has achieved feats that challenge the conventional understanding of canine capabilities. This narrative of TJ, the four-generation dog, sheds light on the power of perseverance and the potential for greatness when driven by a singular purpose.