There are many rivers flowing into the sea. If you can't tolerate your friends and suffer for them, why should others be friends with you? . . . . You stressed that he will definitely change, but maybe you will lose a good neighbor. Do you think it's important to appreciate the scenery downstairs or to be a harmonious neighbor? I think the most important thing at home is not your own house, but what neighbors you have around you. If there is a conflict between neighbors, there is no point living there.