People's Liberation Army Astronaut Corps People's Liberation Army Astronaut Corps The People's Liberation Army Astronaut Corps () is a unit of the People's Liberation Army Strategic Support Force that is responsible for the selection and training of astronauts for the Chinese manned space program (Project 921). In August 1992, the Manned Space Program Command proposed to select astronaut candidates from the People's Liberation Army Air Force fighter pilots to the Central Military Committee and the proposal was approved in September. In October 1992, a Commission for Science, Technology and Industry for National Defense-PLAAF jointed task force started the preliminary selection; 1,506 pilots were identified and
Chinese as a foreign language neutral (轻声，denoted as no-mark in Pinyin) although the official name of the tones is Four Tones. Many other Chinese dialects have more, for example, Cantonese has six (often numbered as nine, but three are duplicates). In most Western languages, tones are only used to express emphasis or emotion, not to distinguish meanings as in Chinese. A French Jesuit, in a letter, relates how the Chinese tones cause a problem for understanding: Moser also stated that tones were a contributing factor to the difficulty of learning Chinese, partly because it is difficult for non-native learners to know how to convey emotion