This book covers the period from the start of Japanese imperialist aggression in Northeast China to 1945, when the Soviet Union declared war on Japan and sent troops into Northeast China, and Japan surrendered unconditionally. It tells the story of Li Guangyi and a group of civilian patriots who fought the Japanese in the rich lands of the Liao River basin. Through frosty dawns and bloodied nights, amid cold winds and icy waters, they left their families and children behind, gave their lives without hesitation, and fought the invaders in a bitter struggle.