This is a recent years the rise of a network term, its predecessor is "sister" refers to young women, but later in the typing process found that it and "Mei Mei" homophonic, and "Mei Mei The word "Mei Mei" is more able to meet the requirements of the woman's title, so it has been used. This is some like "moderator" is called "bamboos", which "bamboos" involves Xiangfei tears sprinkled with the legend of the bamboo, people like.