To design a message that looks ordinary but actually contains a cryptic warning, you can consider the following elements: 1. **Simple language**: Use everyday language and avoid overly complex sentences or uncommon words. 2. **Puns or metaphors**: Use metaphors or puns to make the message look simple on the surface, but convey a deeper meaning. 3. **Emphasis on details**: Add some seemingly irrelevant information to the details to make the whole message more lifelike, but actually convey an important warning. 4. **Use greetings**: Start with a greeting to create a sense of intimacy and make the message more natural. Here is an example: --- "Hi, the weather has been nice recently, suitable for going out for a walk. However, I heard that the paths in some places have been a bit slippery recently, so be careful when walking! I hope you can take good care of yourself and don't let yourself fall." --- Analysis: - On the surface, it is concerned about the recent weather and travel safety, but it implies some potential danger or risk ("the paths have been a bit slippery recently"). - "Falling" can be understood as a failure in life or work, warning the recipient to be careful. By design, the information appears mundane but actually contains important warnings.