Fostering cross-border tourism via the Hoanh Mo - Dong Zhong Border Gate Cross-border tourism is gaining momentum as a sustainable development trend in the global travel industry. In this context, efforts to promote and expand tourism routes linking Hoanh Mo Border Gate (Vietnam) and Dong Zhong Border Gate (China) with key tourism communes and wards in Quang Ninh Province not only open up new opportunities but also help diversify products and tap into broader markets.