给老师、房东或不熟的人发消息时，开头写称呼，结尾写感谢，会更稳。
When messaging teachers, landlords, or people you don't know well, it is safer to start with a greeting and end with an expression of gratitude.
When messaging teachers, landlords, or people you don't know well, it is safer to start with a greeting and end with an expression of gratitude.