KUNMING, July 23 (Xinhua) — At dawn, Vietnamese tourists lined up at Hekou Port, the largest land port along the Yunnan section of the China-Vietnam border, drawn by more than mere sightseeing.

Amid the queues, men carrying bulging sacks filled with household appliances, small consumer goods, and snacks are a common sight. This bustling scene is driven by Vietnam’s cross-border shopping boom, propelling a wave