Recently, OpenAI released Chat Generative Pre-trained Transformer (ChatGPT) (Schulman et al., 2022) (https://chat.openai.com), which has attracted considerable attention from the industry and academia because of its impressive abilities. This is the first time that such a variety of open tasks can be well solved within one large language model. To better understand ChatGPT, we briefly introduce its history, discuss its advantages and disadvantages, and point out several potential applications. Finally, we analyze its impact on the development of trustworthy artificial intelligence, conversational search engine, and artificial general intelligence.