How old was Zhou Enlai when he died?
Zhou Enlai
In July 1939, while in Yan'an to attend a series of Politburo meetings, Zhou had an accident horseback riding in which he fell and fractured his right elbow.  Because there was little medical care available in Yan'an, Zhou traveled to Moscow for medical treatment, using the occasion to brief the Comintern on the status of the united front. Zhou arrived in Moscow too late to mend the fracture, and his right arm remained bent for the rest of his life. Joseph Stalin was so displeased with the CCP's refusal to work more closely with the Nationalists that he refused to see Zhou during his stay.[134] Zhou's adopted daughter, Sun Weishi, accompanied Zhou to Moscow. She remained in Moscow after Zhou left in order to study for a career in theatre.[126]