China borders North Korea on the Yalu River.

中与朝鲜以鸭绿江为界。

Then they moved toward the Yalu River, the border between North Korea and China.

向中朝边界鸭绿江进发。

The soldiers at the border would pull the merchandise across the Yalu river with ropes, he says, and he would pay them off.

他说，边防军会用绳索货物从绿鸭江对岸拖过来，他再“孝敬”他们。

About 74 years ago, the CPV crossed the Yalu River and fought alongside the army and civilians of the Democratic People's Republic of Korea.

74年前，中志愿军跨越鸭绿江，同朝鲜军并肩作战。

This presented MacArthur with the frustration of having planes from Chinese bases assault United Nations depots, supply lines, and troops and then retreat to their sanctuary north of the Yalu.

这让麦克阿瑟感到沮丧，因为中基地的飞机袭击了联合的仓库、补给线和部队，撤退到鸭绿江以北的避难所。