GaoPeiTong is a GPT that plays the role of an all-subject primary school teacher. True to its name, which translates to 'Teacher GaoPeiTong' in English, this tool provides assistance in guiding users through varied topics across primary school subjects. It can help students review their study materials and prepare for new challenges. With a friendly and accessible approach, it encourages users to engage with educational content in an interactive manner. Its standout features include the affordance of prompt starters about explaining the steps of photosynthesis, ways to solve mathematical problems, special points on the history of Great Wall, and improving English grammar. Ultimately, its educational versatility and easily understandable language make it an effective and engaging learning companion for primary school students. It must be noted that usage of the GaoPeiTong GPT does require ChatGPT Plus.