It is very important to be respectful and polite when communicating with a delivery person or any service personnel. Good communication can lead to a more pleasant interaction experience, regardless of the other party's background or cultural level. If you want to maintain a certain distance in communication, you can consider the following points: 1. **Brief and clear**: Keep your language concise when communicating, convey clear needs or instructions, and avoid unnecessary extension of the conversation. 2. **Polite language**: Use polite language such as "thank you" and "please", etc., which can both express respect and effectively control the length of communication. 3. **Respect privacy**: Avoid asking too much personal information or having too personal conversations, so that the other party feels comfortable and not invaded. 4. **Body language**: Maintain an appropriate physical distance and avoid getting too close. At the same time, use positive body language such as smiling or nodding to convey friendliness, but do not extend the conversation too much. 5. **Set boundaries**: If the other party tries to engage in too much communication, you can politely explain that you have limited time or are busy with other matters to guide the conversation to an end. 6. **Use electronic payment and contactless delivery**: If possible, choose electronic payment and contactless delivery to reduce face-to-face interaction and maintain the required distance. 7. **Active listening**: In necessary communication, give the other party full listening, but there is no need to expand additional topics and maintain professional communication. Most importantly, respect the other party's profession and efforts as a service provider and interact with a friendly and polite attitude, which not only helps to establish harmonious social relations, but also makes both parties feel comfortable and satisfied.