Origin: Chinese mythology
Nu Gua (also known as Nuwa) and Fu Xi appear in many myths. In one story, the two were siblings who wished to become husband and wife. Nu Gua was shy and felt guilty, so her brother took her to the mountains and prayed to Heaven, asking to be wed. Once they are married, Nu Gua makes a fan of grass to hide her face. The custom of women hiding their face with a fan may stem from this.
In another story, Nu Gua feels lonely and beings crafting people with clay by hand. Soon she realizes that it is too time consuming, and beings splashing a vine into the watery mud, the droplets transforming into humans. The hand made people are the rich and noble, and those who came from mud were poor and common.