Waiwainv is a word that appeared in the market in 2005, and 20 13 was exposed by Haitian feast. Commonly known as "commercial model" in the circle, the common name is dirty model, which refers to young women who act in TV dramas, movies and other legitimate industries, such as plane models and actors. In essence, they are engaged in gray occupations such as sex services. Women engaged in "peripheral" services generally introduce each other and have a clear social status in the circle. Services include accompanying eating, sleeping, attending heavy-tasting parties, and even accompanying large-scale behaviors such as drug abuse. In order to get rid of this group, some of these women will eventually choose to be adopted by the rich, while others will strive to improve their fame and become officially signed singers and famous actors.