“…In 1967, China was at the beginning of the Cultural Revolution, but the scientists chosen to work on the 523 project were promised protection from the Red Guards; nevertheless, considering the speed at which the leaders were replaced then, these scientists (among them, Zhou Keding, the project coordinator in the Academy of Military Medical Sciences, Li Ying from the Shanghai Institute of Materia medica ...) remained cautious in keeping their work as secret as possible and avoided all communication, which could be intercepted by uncontrollable Red Guards ( History of Qinghaosu and Prof. Zhou Keding , 2008; Li & Wu, 2003; Burns, 2008). Though later, they liked joking about how they had to work in very special and unorthodox ways, they were taking considerable risks.…”