交界 (jiāo jiè): ขอบเขตร่วมกัน

At the river that forms the border between the two countries, there is a lively border market where many people come to do business every day.

Where Hubei and Chongqing meet, the mountains are high and the roads steep, so you must be especially careful when driving through.

This forest is the boundary zone between a nature reserve and a village, and wild animals often come out to look for food.

On the map, that dotted line marks the boundary between the two provinces, but in reality there is no obvious boundary marker.

In the evening, I stood at the boundary between the city and the countryside, with tall buildings on one side and green farmland on the other.