Two women from Nghe An province in Vietnam have been charged over the sale of two 15-year-old girls to Chinese men.

Vi Thi Hoai Thanh, 39, and Ngan Thi Dua, 31, face seven years in jail if found guilty of human trafficking of people under 16, VN Express reported.

Police said in 2015 Ngan convinced the two girls to head to China for “high paying jobs.” She then got in touch with Vi, who took the girls and crossed the northern border in Quang Ninh province. The two girls were then sold to Chinese men.

The two were then made to be the “wives” of the men. When one of the girls was allowed to return to Vietnam by her husband, she reported her abduction to police and the two women responsible were arrested in late February.

It is unknown whether the two girls gave birth to any children during their ordeal in China.

Vietnamese girls and women are often sold to men in China. The severe gender disparity due to the one-child policy saw a considerable number of men buying wives from bordering countries such as Vietnam and Cambodia.