on land it is the military demarcation line or armistice line of 1953 buffered on both sides by the demilitarized zone that was created by the agreement that ended the Korean War at that time
its supposed continuation into the yellow sea aka the northern limit line was never agreed by North Korea & remains under active dispute
TheEast China Sea.
North Korea is the only country that has a land border with South Korea. However, South Korea is not that far from China and Japan over the water.
china and south korea. There are 3. North Korea also has a short border with Russia.
China and Russia border North Korea to the north while South Korea borders North Korea to the south. Russia's border with North Korea is on the far north east tip and is very small. China's border with North Korea is the largest of the North Korean borders.
It is close to The border that separates north Korea from south Korea. The distance between Kaesong and the border is about 8 km (5 miles).
South Korea and China
Seoul is a city completely bounded by the country of South Korea. (It is not like Nicosia, Cyprus, which is actually on the border with the Turkish Republic of North Cyprus.) South Korea only has a land border with North Korea, but this is an impassible border.
Only the sea is east of Korea.
The 38th Parallel.
China in the north, South Korea in the south.
China and Russia to the north and South Korea to the (surprise!) south
the 38th parallel
fare from the border