People's Liberation Army Astronaut Corps twelve were chosen as astronaut candidates. The Astronaut Corps was established in January 1998 and the twelve along with two PLAAF trainees sent to Yuri Gagarin Cosmonaut Training Center in 1996 forms Chinese Group 1. Seven pilots entered the Astronaut Corps in May 2010 as the Group 2. In 2014, Group 1 astronauts Wu Jie, Li Qinglong, Chen Quan, Zhao Chuandong, and Pan Zhanchun retired from the Astronaut Corps due to age; none of them had flown in a mission. The Astronaut Corps was part of the General Armaments Department until GAD's disbandment in January 2016. As part of the
Chinese as a foreign language (one year and about 8 months), to learn Mandarin. A quote attributed to William Milne, Morrison's colleague, goes that learning Chinese is Several major difficulties stand out: While English uses an alphabet, Chinese uses "hanzi", or Chinese characters, as its writing system. The "Kangxi dictionary" contains 47,035 characters (). However, most of the characters contained there are archaic and obscure. The Chart of Common Characters of Modern Chinese (), promulgated in People's Republic of China, lists 2,500 common characters and 1,000 less-than-common characters, while the Chart of Generally Utilized Characters of Modern Chinese () lists 7,000 characters, including the 3,500