When the poet Lu You was 20 year old he married his cousin Tang Wan, his mother's niece. The couple loved each other deeply, but Tang Wan's mother-in-law took a dislike to her and insisted that Lu You divorce her.
詩人陸游在二十歲時迎娶表妹唐琬；也就是母親的姪女，夫妻恩愛，卻遭婆婆憎惡，硬叫陸游休妻。