"Two in a Tower" by Thomas Hardy is a novel about forbidden love that crosses the boundaries of social conventions. The main characters, Lady Constance and Sir William, a representative of high society and an amateur astronomer, meet against the background of a beautiful English landscape. Their dangerous face-to-face relationship makes readers feel the pains and joys of love, the speed of time and the flaws of society. Whether they will decide to fight for their happiness or submit to society's demands is a mystery that can only be solved by reading this fascinating novel.