Fang Daining, a key scientist in China’s hypersonic weapons programme, has died at the age of 68, according to an image of an obituary notice that began circulating on Chinese social media last week. Early online discussions included claims that Fang, who was also a Chinese Academy of Sciences (CAS) member, the country’s highest academic title in science and technology, suffered an unexpected medical episode during a work trip to South Africa. The South China Morning Post could not confirm the...