Introduction to the Sandong Bridge: In the early morning of June 4, Japanese Consul General in Fengtian, Hayashi Kujiro, got up very early, climbed to the roof of his house and looked at the Sandong Bridge with a telescope. At 5:23, when the special car Zhang Zuolin was riding entered the Sandong Bridge at the intersection of the Beijing-Fengcheng (Beijing to Shenyang) Railway and the South Manchuria (Jilin to Dalian) Railway, Japanese Kwantung Army Captain Tetsuo Tonomiya pressed the button, and there was a loud bang. , a granite pier in the middle of the Sandong Bridge was blown open, the rails and bridges on the bridge were blown into bends, and were thrown into the sky. Zhang Zuolin's special carriage was blown away until only a chassis was left.