1. Honesty: Friends should communicate sincerely, not hide their true thoughts and feelings, and be brave to express themselves even in the face of differences, in order to enhance understanding through communication.
2. Respect differences: Recognize that everyone has unique personalities, interests, and perspectives, respect and accept these differences, avoid meaningless disputes, and work together to create an inclusive atmosphere.
3. Mutual support: When friends encounter difficulties or challenges, providing help and support within one's ability, whether it is emotional listening or practical assistance, can deepen the friendship between each other.