I watched Chasing Beauty on Netflix and one of the models was thirteen years old. She was with a USA modeling agency and they sent her to China because they like young models there. Nobody met her at the airport and she had to find her way around by herself without an adult guardian. She had to pay her own plane fare and hotel and food and sometimes she didn't get paid for the modeling sessions. She came back to the USA with a $2000 credit card debt.