Yongdingmen (simplified Chinese: ; traditional Chinese: ; pinyin: Yǒngdìngmén; Manchu: Enteheme toktoho duka) was the former front gate of the outer section of Beijing's old city wall. Originally built in 1553, it was torn down in the 1950s to make way for the new road system in Beijing. In 2005, the Yongdingmen was reconstructed at the site of the old city gate. This new gate is disconnected from the original road leading towards the gate and into the city (see photograph below).
During the Boxer rebellion, on 11 June, the secretary of the Japanese legation, Sugiyama Akira (杉山 彬?), was attacked and killed by the Muslim soldiers of General Dong Fuxiang near Yongdingmen, who were guarding the southern part of the Beijing walled city.
On June 11th occurred the murder of the Japanese Chancellor, Sugiyama, by the Boxers, and Tung Fuhsiang's Kansu' troops. The Chancellor attempted to leave Peking by the Yung-ting gate in order to meet Admiral Seymour's relief force, which was on its way to the capital from Tientsin, and which was apparently expected to reach Peking that day. Sugiyama rode in a cart with a broad red band round the body, denoting that the occupant was of, at least, the second rank. When he arrived at the Yung-ting gate he was accosted by a number of Tung Fu-hsiang's men who were guarding it. It seemed that Prince Tuan had that day given secret orders that no foreigner was to be allowed either to leave the city or enter it. He was therefore stopped and asked who he was. Sugiyama told them that he was a member of the Japanese legation. "Are you the Japanese minister? "No, I am only a chancellor of the legation." "Then what right have you, a petty officer like that, to ride in such a high official's cart?" So they pulled him out of his cart and began to mob the unlucky Chancellor. Sugiyama then demanded to be brought before General Tung Fu-hsiang. "What! You to speak to our Great General! (Ta Shuei.) Why, you are too insignificant to have such an honor!" At last, however, a red-buttoned Kansu officer appeared on the scene, to whom Sugiyama appealed for help. Instead of doing so the ruffian merely ordered the Japanese Chancellor's head to be struck off as a sacrifice to their war banner, and stuck near the gate, "for trying to break but of Peking." Sugiyama was the first foreigner murdered inside Peking. The great mass of the population of Peking were greatly alarmed at these blood-thirsty proceedings, and all were expecting that the Empress Dowager would show some disapproval of the murder of the Japanese Chancellor, belonging to a friendly State, and the member of an Embassy; but the Manchus, one and all, were jubilant when they heard of the murder. Finally the official seal of approval from the highest quarter for this dastardly murder was made by Prince Tuan, who, when he met General Tung Fu-hsiang the next morning, slapped the latter on the back and raising his right thumb called out "Hao" (good!) The raising of the thumb denotes that the person addressed is a "first-class hero."