I think we should talk less, especially if it is not conducive to unity. Do public welfare work in a public environment. For example: public health, my roommate is not at home to hang clothes outside in rainy days, so help me collect them. Doing it silently does not show merit. Go out and walk in with a smile. Just do your own thing and get along well. There is no need to ask others to think what they think. It is normal to have different personalities in the world. It's normal to get along badly. There's no need to be so formal. Leave a personal line for future meetings.