Artillery shell introduction: The one on the left is the Japanese 230-caliber artillery shell, and the one on the right is the 280-caliber artillery shell that the Japanese army worked day and night to produce. It weighs more than 400 kilograms, has a range of 7.8 kilometers, and is extremely powerful, no less powerful than the atomic bomb at that time. In the end, the Japanese army relied on this latest artillery shell to win the brutal Russo-Japanese War.