1. Greetings: Using the other person's real name in private letters, such as "Hello, Teacher Zhang", can make the other person feel your concern and respect.
2. Personalized opening remarks: While greeting, mention the other person's common interests or experiences, such as "I saw you attend a concert recently and want to share some experiences with you." This personalized openness can arouse each other's interest and sense of identity.
3. The content is short and clear: don't expand the topic too much in private letters, be simple and clear. Point out your purpose and express your appreciation or expectation for each other, such as "Nice to meet you, I have a question about music." This will not only arouse the interest of the other party, but also give the other party a reason to reply.