(VOVWORLD) - "Catch a wife" is a traditional custom of the Mong and some other ethnic groups in Vietnam’s northwest region. The custom of a man pulling a woman to be his wife usually takes place at fairs and festivals. The couples are already in love and preparing to get married. But for many years, the custom was interpreted as "marriage by capture." Ma Thi Di, a 14-year-old Hmong girl in Sapa town, Lao Cai province, courageously resisted the backward custom and would not let others arrange her marriage and steal her life.