Golden Artery

During the most difficult years of the Anti-Japanese War, how did Yan'an survive? The answer lies in a secret transportation line that no one knows about. One hundred and thirty thousand taels of gold were snatched inch by inch from a gold mine heavily guarded by the Japanese army, crossed thousands of miles of blockade, and delivered to northern Shaanxi at the cost of twenty people for six. This is not a legend, it is an economic war that actually happened.