from 1903 to 1918. . Ketteler returned to China in 1899 as
Plenipotentiary at
Beijing, from where he pointed out in vain the dangerous situation for the Europeans. On 12 June 1900, when the
Boxers moved to the inner city and burned down Christian church buildings, Ketteler reacted by ordering German embassy guards to hunt them down. On 18 June, German troops captured a Chinese civilian suspected of being a Boxer in the inner city and took him to the
Legation Quarter, where he was detained. On 17 June, the Chinese Muslim
Gansu Braves mounted an assault on Ketteler and his German Marines at the Legations. After stones were hurled at the Germans by the Chinese Muslims, Ketteler told his men to shoot back at Muslim forces. The Muslim troops were feared by the Westerners, so the British minister Sir Claude Macdonald warned that "When our own troops arrive we may with safety assume a different tone, but it is hardly wise now." He thus warned Ketteler about his shooting incident with the Muslim army. Ketteler flogged a Chinese man who appeared to be a Boxer, and beat a boy who was with him after taking him to the Legations. Ketteler then allegedly shot him dead. The Gansu braves and Boxers then attacked and killed Chinese Christians around the legations in revenge for foreign attacks on Chinese. Angry at the Chinese Christians for collaborating with foreigners who were murdering the Chinese, the Boxers burned some of them alive and attacked and ransacked their property. Some Muslims also assassinated the secretary of the Japanese legation, Sugiyama Akira, tearing him apart. though another source states they were Manchu
Hushenying bannerman. En Hai later gave himself up to the Allied occupying forces. He was subsequently tried and convicted, and was executed in Beijing on 31 December 1900 by
beheading. He showed no emotion during interrogation, and was fully composed and calm, admitting to killing Ketteler, and even requested execution, saying "I received orders from my sergeant to kill every foreigner that came up the street...I am glad to die for having killed one of the enemies of my country." When questioned about whether he had consumed alcohol during the incident, En Hai said he had not "touched a drop". En Hai was praised as "brave and dignified", and called a "hero". Ketteler was succeeded by
Alfons Mumm von Schwarzenstein as ambassador of the German Empire in Beijing, who signed the
Boxer Protocol on behalf of Germany. After his death, his widow returned to America to be with her family. ==Personal life==