Read the text and know(看文需知)
one(1)
The hero lives upstairs with his sister, and the hero's next door captain Du. Then the hero's next door with his sister is Du Qing, who privately set up an apology
(男主角的楼上住的是她姐,男主角的隔壁住的是我们杜大队长,男主角她姐隔壁住的是杜成他姐,私设致歉)