1. Show friendliness and interest: Express friendliness towards him through a smile, nod, or brief greeting, actively share some topics or activities that he is interested in, and make him feel your attention and enthusiasm.
2. Create a relaxed atmosphere: In appropriate situations, invite him to join some relaxed social activities, such as group discussions, team games, etc., to reduce his tension and increase opportunities for interaction.
3. Provide positive feedback: When he musters the courage to communicate with you, listen carefully and give positive responses and encouragement, making him feel that his expression is valued and appreciated, thereby enhancing his confidence and willingness to communicate.