In today's age what is the primary reason kidnapped Vietnamese women are brought to China?

The primary reason kidnapped Vietnamese women are brought to China is for forced marriages and human trafficking. Many are sold to Chinese men who seek brides due to demographic imbalances in the country, exacerbated by cultural preferences for sons. This grim phenomenon is fueled by poverty, lack of economic opportunities in Vietnam, and the demand for women in certain regions of China. Additionally, organized crime networks play a significant role in facilitating these kidnappings and trafficking operations.