Once upon a time, boys were called "the joy of dreaming bears" and girls were called "the joy of playing with tiles". "Bear in the dream, tile in the play" is the four works of Xiaoya, the Book of Songs. "It's a woman, a bed for sleeping, a petticoat for clothes, and a piece for playing. ..... is the place where men sleep, clothes and tiles are made. " Zhang is a good jade; Tiles are part of a spinning wheel. Boys dream of bears and girls play with tiles, which is a saying that boys are more important than girls. The difference between "sleeping in bed dreaming of bears" and "sleeping on the ground playing with tiles" still existed in disguise during the Republic of China. Some central authorities say "great joy" to gay men, "little Xi" to lesbians, friends and relatives give colored books and couplets, male students write "dream bears" and female students write "tiles". Teacher Lu Xun once exposed and refuted this patriarchal approach in his article: when he gave birth to a son, he regarded it as a treasure, put it on the bed, dressed him well, and fiddled with a jade (Zhang) in his hand; If you have a daughter, you can only throw it on the ground and give her a tile to play with.