Dhaka, Aug 25 Bangladesh is witnessing a disturbing rise in the movement of women to China on family-reunion visas, raising concerns about their vulnerability to trafficking. The surge in China-bound women, alongside documented trafficking cases, suggests that criminal brokers are increasingly exploiting the migration route, a report has stated.The trend also raises broader questions about whether Bangladesh's regulatory and law-enforcement institutions are keeping pace with the risks associated with expanding cross-border activity amid China’s growing economic, commercial and strategic footprint in the South Asian nation, according to a report in Bangladesh’s newspaper Daily Sun.“At least 4,226 Bangladeshi women travelled to…