>>40880179Tso-hsin Cheng was a Chinese ornithologist known for his seminal work on the birds of China and mentor to a generation of researchers. The Chinese state declared Cheng a criminal as he had opposed Chairman Mao's campaign against sparrows. He was told that "birds are public animals of capitalism" and had to wear a badge that read "reactionary" and made to undergo an examination of his supposed ornithological training apart from being forced to sweep the corridors and clean toilets. The test was given by a committee and he was asked to identify a bird made up of parts from multiple species. After failing the "test", his salary was reduced to a bare minimum. In August 1966 he was kept in isolation in a cowshed for six months and his house was searched by Red Guards who confiscated all his belongings including a typewriter that he valued the most.
