2. put yourself before others: consider others first, then consider yourself;
3. Helpfulness: refers to being willing to take the initiative to help people in need;
4. Self-sacrifice for others: at first, it refers to giving up one's own ideas and agreeing with others, and later it refers to giving up one's own interests and helping others;
5. Honesty: It means that two people treat each other sincerely and tell each other their thoughts without reservation.