In 1937, when the July 7 Incident broke out, the Japanese army started to invade China and plundered China's strategic resources such as gold to pay for military expenses. The Eighth Route Army Jiaodong Military Region fighters and hunters Yu Dongfeng and other people together with the bloodbath, through the hardships of thousands of miles to transport gold, fighters and the people and the Japanese invaders launched a protracted life-and-death struggle, and ultimately transported the gold to the Party Central Committee in Yan'an, a powerful support for the national war of resistance.